diff --git a/packages/client/src/components/MkFollowButton.vue b/packages/client/src/components/MkFollowButton.vue
index 0920001c7b..4e2d884749 100644
--- a/packages/client/src/components/MkFollowButton.vue
+++ b/packages/client/src/components/MkFollowButton.vue
@@ -8,7 +8,7 @@
 		<i :class="icon('ph-dots-three-outline')"></i>
 	</button>
 	<button
-		v-if="!hideFollowButton && isSignedIn && me!.id != user.id"
+		v-if="!hideFollowButton && isSignedIn(me) && me.id != user.id"
 		v-tooltip="full ? null : `${state} ${user.name || user.username}`"
 		class="kpoogebi _button follow-button"
 		:class="{
diff --git a/packages/client/src/components/MkMention.vue b/packages/client/src/components/MkMention.vue
index f943997459..62626f8373 100644
--- a/packages/client/src/components/MkMention.vue
+++ b/packages/client/src/components/MkMention.vue
@@ -51,9 +51,9 @@ const canonical =
 const url = `/${canonical}`;
 
 const isMe =
-	isSignedIn &&
+	isSignedIn(me) &&
 	`@${props.username}@${toUnicode(props.host)}`.toLowerCase() ===
-		`@${me!.username}@${toUnicode(localHost)}`.toLowerCase();
+		`@${me.username}@${toUnicode(localHost)}`.toLowerCase();
 </script>
 
 <style lang="scss" scoped>
diff --git a/packages/client/src/components/MkNote.vue b/packages/client/src/components/MkNote.vue
index 6a22652f60..41b396c173 100644
--- a/packages/client/src/components/MkNote.vue
+++ b/packages/client/src/components/MkNote.vue
@@ -235,7 +235,7 @@
 					<XQuoteButton class="button" :note="appearNote" />
 					<button
 						v-if="
-							isSignedIn &&
+							isSignedIn(me) &&
 							isForeignLanguage &&
 							translation == null
 						"
@@ -370,7 +370,7 @@ const reactButton = ref<HTMLElement | null>(null);
 const appearNote = computed(() =>
 	isRenote ? (note.value.renote as NoteType) : note.value,
 );
-const isMyRenote = isSignedIn && me!.id === note.value.userId;
+const isMyRenote = isSignedIn(me) && me.id === note.value.userId;
 // const showContent = ref(false);
 const isDeleted = ref(false);
 const muted = ref(
diff --git a/packages/client/src/components/MkNoteSub.vue b/packages/client/src/components/MkNoteSub.vue
index c7cf06d2e5..aed6de486d 100644
--- a/packages/client/src/components/MkNoteSub.vue
+++ b/packages/client/src/components/MkNoteSub.vue
@@ -127,7 +127,7 @@
 					<XQuoteButton class="button" :note="appearNote" />
 					<button
 						v-if="
-							isSignedIn &&
+							isSignedIn(me) &&
 							isForeignLanguage &&
 							translation == null
 						"
diff --git a/packages/client/src/components/MkPushNotificationAllowButton.vue b/packages/client/src/components/MkPushNotificationAllowButton.vue
index 788c9a3264..1d1be0fb05 100644
--- a/packages/client/src/components/MkPushNotificationAllowButton.vue
+++ b/packages/client/src/components/MkPushNotificationAllowButton.vue
@@ -16,7 +16,7 @@
 	<MkButton
 		v-else-if="
 			!showOnlyToRegister &&
-			(isSignedIn ? pushRegistrationInServer : pushSubscription)
+			(isSignedIn(me) ? pushRegistrationInServer : pushSubscription)
 		"
 		type="button"
 		:primary="false"
@@ -31,7 +31,7 @@
 		{{ i18n.ts.unsubscribePushNotification }}
 	</MkButton>
 	<MkButton
-		v-else-if="isSignedIn && pushRegistrationInServer"
+		v-else-if="isSignedIn(me) && pushRegistrationInServer"
 		disabled
 		:rounded="rounded"
 		:inline="inline"
@@ -142,7 +142,7 @@ async function unsubscribe() {
 
 	pushRegistrationInServer.value = undefined;
 
-	if (isSignedIn && accounts.length >= 2) {
+	if (isSignedIn(me) && accounts.length >= 2) {
 		apiWithDialog("sw/unregister", {
 			i: me.token,
 			endpoint,
@@ -189,7 +189,7 @@ if (navigator.serviceWorker == null) {
 		if (
 			instance.swPublickey &&
 			"PushManager" in window &&
-			isSignedIn &&
+			isSignedIn(me) &&
 			me.token
 		) {
 			supported.value = true;
diff --git a/packages/client/src/components/MkReactionsViewer.reaction.vue b/packages/client/src/components/MkReactionsViewer.reaction.vue
index 89f51797ab..0baa9d2eed 100644
--- a/packages/client/src/components/MkReactionsViewer.reaction.vue
+++ b/packages/client/src/components/MkReactionsViewer.reaction.vue
@@ -23,12 +23,12 @@
 
 <script lang="ts" setup>
 import { computed, ref } from "vue";
-import type { entitites } from "firefish-js";
+import type { entities } from "firefish-js";
 import XDetails from "@/components/MkReactionsViewer.details.vue";
 import XReactionIcon from "@/components/MkReactionIcon.vue";
 import * as os from "@/os";
 import { useTooltip } from "@/scripts/use-tooltip";
-import { isSignedIn } from "@/me";
+import { isSignedIn, me } from "@/me";
 
 const props = defineProps<{
 	reaction: string;
@@ -43,7 +43,9 @@ const emit = defineEmits<{
 
 const buttonRef = ref<HTMLElement>();
 
-const canToggle = computed(() => isSignedIn && !props.reaction.match(/@\w/));
+const canToggle = computed(
+	() => isSignedIn(me) && !props.reaction.match(/@\w/),
+);
 
 const toggleReaction = () => {
 	if (!canToggle.value) return;
diff --git a/packages/client/src/components/MkReactionsViewer.vue b/packages/client/src/components/MkReactionsViewer.vue
index 9977faf15f..27f1b9d435 100644
--- a/packages/client/src/components/MkReactionsViewer.vue
+++ b/packages/client/src/components/MkReactionsViewer.vue
@@ -30,7 +30,7 @@ const reactionsEl = ref<HTMLElement>();
 
 const initialReactions = new Set(Object.keys(props.note.reactions));
 
-const isMe = computed(() => isSignedIn && me.id === props.note.userId);
+const isMe = computed(() => isSignedIn(me) && me.id === props.note.userId);
 </script>
 
 <style lang="scss" scoped>
diff --git a/packages/client/src/components/MkRenoteButton.vue b/packages/client/src/components/MkRenoteButton.vue
index 7250757da4..4f0a669c11 100644
--- a/packages/client/src/components/MkRenoteButton.vue
+++ b/packages/client/src/components/MkRenoteButton.vue
@@ -74,10 +74,10 @@ useTooltip(buttonRef, async (showing) => {
 
 const hasRenotedBefore = ref(false);
 
-if (isSignedIn) {
+if (isSignedIn(me)) {
 	os.api("notes/renotes", {
 		noteId: props.note.id,
-		userId: me!.id,
+		userId: me.id,
 		limit: 1,
 	}).then((res) => {
 		hasRenotedBefore.value = res.length > 0;
diff --git a/packages/client/src/components/MkTimeline.vue b/packages/client/src/components/MkTimeline.vue
index f3fe6c7872..d9056c3b25 100644
--- a/packages/client/src/components/MkTimeline.vue
+++ b/packages/client/src/components/MkTimeline.vue
@@ -1,6 +1,6 @@
 <template>
 	<MkInfo
-		v-if="tlHint && !tlHintClosed && isSignedIn"
+		v-if="tlHint && !tlHintClosed && isSignedIn(me)"
 		:closeable="true"
 		class="_gap"
 		@close="closeHint"
@@ -120,7 +120,7 @@ const prepend = (note: entities.Note) => {
 	emit("note");
 
 	if (props.sound) {
-		sound.play(isSignedIn && note.userId === me?.id ? "noteMy" : "note");
+		sound.play(isSignedIn(me) && note.userId === me?.id ? "noteMy" : "note");
 	}
 };
 
diff --git a/packages/client/src/components/MkUserInfo.vue b/packages/client/src/components/MkUserInfo.vue
index eb4940858a..137886b4ef 100644
--- a/packages/client/src/components/MkUserInfo.vue
+++ b/packages/client/src/components/MkUserInfo.vue
@@ -8,7 +8,7 @@
 			:class="{ detailed }"
 		>
 			<span
-				v-if="isSignedIn && me.id !== user.id && user.isFollowed"
+				v-if="isSignedIn(me) && me.id !== user.id && user.isFollowed"
 				class="followed"
 				>{{ i18n.ts.followsYou }}</span
 			>
@@ -80,7 +80,7 @@
 		<div class="buttons">
 			<slot>
 				<MkFollowButton
-					v-if="isSignedIn && user.id !== me.id"
+					v-if="isSignedIn(me) && user.id !== me.id"
 					:user="user"
 				/>
 			</slot>
diff --git a/packages/client/src/init.ts b/packages/client/src/init.ts
index 17b44bb9f8..08d424cffc 100644
--- a/packages/client/src/init.ts
+++ b/packages/client/src/init.ts
@@ -262,7 +262,7 @@ function checkForSplash() {
 	}
 
 	if (
-		isSignedIn &&
+		isSignedIn(me) &&
 		defaultStore.state.tutorial === -1 &&
 		!["/announcements", "/announcements/"].includes(window.location.pathname)
 	) {
@@ -417,7 +417,7 @@ function checkForSplash() {
 		s: search,
 	};
 
-	if (isSignedIn) {
+	if (isSignedIn(me)) {
 		// only add post shortcuts if logged in
 		hotkeys["p|n"] = post;
 
diff --git a/packages/client/src/me.ts b/packages/client/src/me.ts
index 0add04975b..e0c3cb58cf 100644
--- a/packages/client/src/me.ts
+++ b/packages/client/src/me.ts
@@ -8,7 +8,7 @@ export const me = accountData
 	? reactive(JSON.parse(accountData) as Account)
 	: null;
 
-export const isSignedIn = me != null;
+export const isSignedIn = (i: typeof me): i is Account => i != null;
 export const isModerator = me != null && (me.isModerator || me.isAdmin);
 export const isEmojiMod = isModerator || me?.emojiModPerm !== "unauthorized";
 export const isAdmin = me?.isAdmin;
diff --git a/packages/client/src/navbar.ts b/packages/client/src/navbar.ts
index d06c8cf18e..771e55d60a 100644
--- a/packages/client/src/navbar.ts
+++ b/packages/client/src/navbar.ts
@@ -11,21 +11,21 @@ export const navbarItemDef = reactive({
 	notifications: {
 		title: "notifications",
 		icon: `${icon("ph-bell")}`,
-		show: computed(() => isSignedIn),
+		show: computed(() => isSignedIn(me)),
 		indicated: computed(() => me?.hasUnreadNotification),
 		to: "/my/notifications",
 	},
 	messaging: {
 		title: "messaging",
 		icon: `${icon("ph-chats-teardrop")}`,
-		show: computed(() => isSignedIn),
+		show: computed(() => isSignedIn(me)),
 		indicated: computed(() => me?.hasUnreadMessagingMessage),
 		to: "/my/messaging",
 	},
 	drive: {
 		title: "drive",
 		icon: `${icon("ph-cloud")}`,
-		show: computed(() => isSignedIn),
+		show: computed(() => isSignedIn(me)),
 		to: "/my/drive",
 	},
 	followRequests: {
@@ -54,19 +54,19 @@ export const navbarItemDef = reactive({
 	lists: {
 		title: "lists",
 		icon: `${icon("ph-list-bullets")}`,
-		show: computed(() => isSignedIn),
+		show: computed(() => isSignedIn(me)),
 		to: "/my/lists",
 	},
 	antennas: {
 		title: "antennas",
 		icon: `${icon("ph-flying-saucer")}`,
-		show: computed(() => isSignedIn),
+		show: computed(() => isSignedIn(me)),
 		to: "/my/antennas",
 	},
 	favorites: {
 		title: "favorites",
 		icon: `${icon("ph-bookmark-simple")}`,
-		show: computed(() => isSignedIn),
+		show: computed(() => isSignedIn(me)),
 		to: "/my/favorites",
 	},
 	pages: {
@@ -82,7 +82,7 @@ export const navbarItemDef = reactive({
 	clips: {
 		title: "clips",
 		icon: `${icon("ph-paperclip")}`,
-		show: computed(() => isSignedIn),
+		show: computed(() => isSignedIn(me)),
 		to: "/my/clips",
 	},
 	channels: {
diff --git a/packages/client/src/pages/announcements.vue b/packages/client/src/pages/announcements.vue
index 59b703a35e..bd861e226a 100644
--- a/packages/client/src/pages/announcements.vue
+++ b/packages/client/src/pages/announcements.vue
@@ -17,7 +17,7 @@
 				>
 					<div class="_title">
 						<h3>
-							<span v-if="isSignedIn && !announcement.isRead">
+							<span v-if="isSignedIn(me) && !announcement.isRead">
 								🆕&nbsp;
 							</span>
 							{{ announcement.title }}
@@ -37,7 +37,7 @@
 						/>
 					</div>
 					<div
-						v-if="isSignedIn && !announcement.isRead"
+						v-if="isSignedIn(me) && !announcement.isRead"
 						class="_footer"
 					>
 						<MkButton primary @click="read(announcement.id)"
@@ -60,7 +60,7 @@ import * as os from "@/os";
 import { i18n } from "@/i18n";
 import { definePageMetadata } from "@/scripts/page-metadata";
 import icon from "@/scripts/icon";
-import { isSignedIn } from "@/me";
+import { isSignedIn, me } from "@/me";
 
 const pagination = {
 	endpoint: "announcements" as const,
diff --git a/packages/client/src/pages/auth.vue b/packages/client/src/pages/auth.vue
index a874d0fd26..504343405f 100644
--- a/packages/client/src/pages/auth.vue
+++ b/packages/client/src/pages/auth.vue
@@ -1,8 +1,8 @@
 <template>
-	<div v-if="isSignedIn && fetching" class="">
+	<div v-if="isSignedIn(me) && fetching" class="">
 		<MkLoading />
 	</div>
-	<div v-else-if="isSignedIn">
+	<div v-else-if="isSignedIn(me)">
 		<XForm
 			v-if="state == 'waiting'"
 			ref="form"
@@ -52,7 +52,7 @@ import MkSignin from "@/components/MkSignin.vue";
 import MkKeyValue from "@/components/MkKeyValue.vue";
 import * as os from "@/os";
 import { signIn } from "@/account";
-import { isSignedIn } from "@/me";
+import { isSignedIn, me } from "@/me";
 import { i18n } from "@/i18n";
 
 const props = defineProps<{
@@ -64,7 +64,7 @@ const fetching = ref(true);
 const auth_code = ref("");
 
 onMounted(() => {
-	if (!isSignedIn) return;
+	if (!isSignedIn(me)) return;
 
 	os.api("auth/session/show", { token: props.token })
 		.then((sess: any) => {
diff --git a/packages/client/src/pages/clip.vue b/packages/client/src/pages/clip.vue
index 8507721519..6f99f66062 100644
--- a/packages/client/src/pages/clip.vue
+++ b/packages/client/src/pages/clip.vue
@@ -51,7 +51,7 @@ const pagination = {
 };
 
 const isOwned: boolean | null = computed<boolean | null>(
-	() => isSignedIn && clip.value && me.id === clip.value.userId,
+	() => isSignedIn(me) && clip.value && me.id === clip.value.userId,
 );
 
 watch(
diff --git a/packages/client/src/pages/explore.users.vue b/packages/client/src/pages/explore.users.vue
index ac68bb8d2d..369399e8db 100644
--- a/packages/client/src/pages/explore.users.vue
+++ b/packages/client/src/pages/explore.users.vue
@@ -17,7 +17,7 @@
 					<XUserList :pagination="pinnedUsers" />
 				</MkFolder>
 				<MkFolder
-					v-if="isSignedIn"
+					v-if="isSignedIn(me)"
 					class="_gap"
 					persist-key="explore-popular-users"
 				>
@@ -31,7 +31,7 @@
 					<XUserList :pagination="popularUsers" />
 				</MkFolder>
 				<MkFolder
-					v-if="isSignedIn"
+					v-if="isSignedIn(me)"
 					class="_gap"
 					persist-key="explore-recently-updated-users"
 				>
@@ -45,7 +45,7 @@
 					<XUserList :pagination="recentlyUpdatedUsers" />
 				</MkFolder>
 				<MkFolder
-					v-if="isSignedIn"
+					v-if="isSignedIn(me)"
 					class="_gap"
 					persist-key="explore-recently-registered-users"
 				>
@@ -103,7 +103,7 @@
 				<XUserList :pagination="tagUsers" />
 			</MkFolder>
 
-			<template v-if="tag == null && isSignedIn">
+			<template v-if="tag == null && isSignedIn(me)">
 				<MkFolder class="_gap">
 					<template #header
 						><i
@@ -146,7 +146,7 @@ import MkFolder from "@/components/MkFolder.vue";
 import MkTab from "@/components/MkTab.vue";
 import * as os from "@/os";
 import { i18n } from "@/i18n";
-import { isSignedIn } from "@/me";
+import { isSignedIn, me } from "@/me";
 import icon from "@/scripts/icon";
 
 const props = defineProps<{
diff --git a/packages/client/src/pages/gallery/post.vue b/packages/client/src/pages/gallery/post.vue
index 91b6b764c5..a26006ae6a 100644
--- a/packages/client/src/pages/gallery/post.vue
+++ b/packages/client/src/pages/gallery/post.vue
@@ -59,7 +59,7 @@
 								<div class="other">
 									<button
 										v-if="
-											isSignedIn && me!.id === post.user.id
+											isSignedIn(me) && me.id === post.user.id
 										"
 										v-tooltip="i18n.ts.toEdit"
 										v-click-anime
@@ -105,7 +105,7 @@
 									<MkAcct :user="post.user" />
 								</div>
 								<MkFollowButton
-									v-if="!isSignedIn || me!.id != post.user.id"
+									v-if="!isSignedIn(me) || me.id != post.user.id"
 									:user="post.user"
 									:inline="true"
 									:transparent="false"
diff --git a/packages/client/src/pages/page.vue b/packages/client/src/pages/page.vue
index 9ccfed4271..15987d3fb0 100644
--- a/packages/client/src/pages/page.vue
+++ b/packages/client/src/pages/page.vue
@@ -51,7 +51,7 @@
 									/></MkA>
 									<template
 										v-if="
-											isSignedIn && me.id === page.userId
+											isSignedIn(me) && me.id === page.userId
 										"
 									>
 										<MkA
@@ -159,7 +159,7 @@
 						</div>
 						<!-- <div class="links">
 						<MkA :to="`/@${username}/pages/${pageName}/view-source`" class="link">{{ i18n.ts._pages.viewSource }}</MkA>
-						<template v-if="isSignedIn && me.id === page.userId">
+						<template v-if="isSignedIn(me) && me.id === page.userId">
 							<MkA :to="`/pages/edit/${page.id}`" class="link">{{ i18n.ts._pages.editThisPage }}</MkA>
 							<button v-if="me.pinnedPageId === page.id" class="link _textButton" @click="pin(false)">{{ i18n.ts.unpin }}</button>
 							<button v-else class="link _textButton" @click="pin(true)">{{ i18n.ts.pin }}</button>
diff --git a/packages/client/src/pages/settings/drive.vue b/packages/client/src/pages/settings/drive.vue
index eb279cc372..b4586d986e 100644
--- a/packages/client/src/pages/settings/drive.vue
+++ b/packages/client/src/pages/settings/drive.vue
@@ -64,7 +64,7 @@ const fetching = ref(true);
 const usage = ref<any>(null);
 const capacity = ref<any>(null);
 const uploadFolder = ref<any>(null);
-const alwaysMarkNsfw = ref<boolean>(isSignedIn && me.alwaysMarkNsfw);
+const alwaysMarkNsfw = ref<boolean>(isSignedIn(me) && me.alwaysMarkNsfw);
 
 const meterStyle = computed(() => {
 	return {
diff --git a/packages/client/src/pages/settings/preferences-backups.vue b/packages/client/src/pages/settings/preferences-backups.vue
index 15ff5de402..d0361d39f9 100644
--- a/packages/client/src/pages/settings/preferences-backups.vue
+++ b/packages/client/src/pages/settings/preferences-backups.vue
@@ -65,7 +65,7 @@ import * as os from "@/os";
 import { ColdDeviceStorage, defaultStore } from "@/store";
 import { unisonReload } from "@/scripts/unison-reload";
 import { useStream } from "@/stream";
-import { isSignedIn } from "@/me";
+import { isSignedIn, me } from "@/me";
 import { i18n } from "@/i18n";
 import { host, version } from "@/config";
 import { definePageMetadata } from "@/scripts/page-metadata";
@@ -170,7 +170,7 @@ interface Profile {
 	};
 }
 
-const connection = isSignedIn && stream.useChannel("main");
+const connection = isSignedIn(me) && stream.useChannel("main");
 
 const profiles = ref<Record<string, Profile> | null>(null);
 
diff --git a/packages/client/src/pages/timeline.vue b/packages/client/src/pages/timeline.vue
index 8a577e78ce..31434338b2 100644
--- a/packages/client/src/pages/timeline.vue
+++ b/packages/client/src/pages/timeline.vue
@@ -75,28 +75,28 @@ import * as os from "@/os";
 import { defaultStore } from "@/store";
 import { i18n } from "@/i18n";
 import { instance } from "@/instance";
-import { isModerator, isSignedIn } from "@/me";
+import { isModerator, isSignedIn, me } from "@/me";
 import { definePageMetadata } from "@/scripts/page-metadata";
 import { deviceKind } from "@/scripts/device-kind";
 import icon from "@/scripts/icon";
 import "swiper/scss";
 import "swiper/scss/virtual";
 
-if (isSignedIn && defaultStore.reactiveState.tutorial.value !== -1) {
+if (isSignedIn(me) && defaultStore.reactiveState.tutorial.value !== -1) {
 	os.popup(XTutorial, {}, {}, "closed");
 }
 
-const isHomeTimelineAvailable = isSignedIn;
+const isHomeTimelineAvailable = isSignedIn(me);
 const isLocalTimelineAvailable =
 	(!instance.disableLocalTimeline &&
-		(isSignedIn || instance.enableGuestTimeline)) ||
+		(isSignedIn(me) || instance.enableGuestTimeline)) ||
 	isModerator;
-const isSocialTimelineAvailable = isLocalTimelineAvailable && isSignedIn;
+const isSocialTimelineAvailable = isLocalTimelineAvailable && isSignedIn(me);
 const isRecommendedTimelineAvailable =
-	!instance.disableRecommendedTimeline && isSignedIn;
+	!instance.disableRecommendedTimeline && isSignedIn(me);
 const isGlobalTimelineAvailable =
 	(!instance.disableGlobalTimeline &&
-		(isSignedIn || instance.enableGuestTimeline)) ||
+		(isSignedIn(me) || instance.enableGuestTimeline)) ||
 	isModerator;
 const keymap = {
 	t: focus,
@@ -205,7 +205,7 @@ function focus(): void {
 }
 
 const headerActions = computed(() =>
-	isSignedIn
+	isSignedIn(me)
 		? [
 				{
 					icon: `${icon("ph-list-bullets")}`,
diff --git a/packages/client/src/pages/user/home.vue b/packages/client/src/pages/user/home.vue
index 463e5cb4a2..a92bbb3b70 100644
--- a/packages/client/src/pages/user/home.vue
+++ b/packages/client/src/pages/user/home.vue
@@ -67,7 +67,7 @@
 									</div>
 									<span
 										v-if="
-											isSignedIn &&
+											isSignedIn(me) &&
 											me.id !== user.id &&
 											user.isFollowed
 										"
@@ -120,7 +120,7 @@
 								/>
 								<span
 									v-if="
-										isSignedIn &&
+										isSignedIn(me) &&
 										me.id !== user.id &&
 										user.isFollowed
 									"
@@ -319,7 +319,7 @@
 						/>
 					</div>
 					<MkInfo
-						v-else-if="isSignedIn && me.id === user.id"
+						v-else-if="isSignedIn(me) && me.id === user.id"
 						style="margin: 12px 0"
 						>{{ i18n.ts.userPagePinTip }}</MkInfo
 					>
diff --git a/packages/client/src/pages/user/index.vue b/packages/client/src/pages/user/index.vue
index 3e079f95cb..6450524687 100644
--- a/packages/client/src/pages/user/index.vue
+++ b/packages/client/src/pages/user/index.vue
@@ -93,7 +93,7 @@ const headerTabs = computed(() =>
 					title: i18n.ts.media,
 					icon: `${icon("ph-grid-four")}`,
 				},
-				...((isSignedIn && me.id === user.value.id) ||
+				...((isSignedIn(me) && me.id === user.value.id) ||
 				user.value.publicReactions
 					? [
 							{
diff --git a/packages/client/src/pizzax.ts b/packages/client/src/pizzax.ts
index 6974df94dc..ce35dbeb24 100644
--- a/packages/client/src/pizzax.ts
+++ b/packages/client/src/pizzax.ts
@@ -17,7 +17,7 @@ type StateDef = Record<
 type ArrayElement<A> = A extends readonly (infer T)[] ? T : never;
 
 const stream = useStream();
-const connection = isSignedIn && stream.useChannel("main");
+const connection = isSignedIn(me) ? stream.useChannel("main") : null;
 
 export class Storage<T extends StateDef> {
 	public readonly key: string;
@@ -43,12 +43,12 @@ export class Storage<T extends StateDef> {
 		const deviceState = JSON.parse(
 			localStorage.getItem(this.keyForLocalStorage) || "{}",
 		);
-		const deviceAccountState = isSignedIn
+		const deviceAccountState = isSignedIn(me)
 			? JSON.parse(
 					localStorage.getItem(`${this.keyForLocalStorage}::${me.id}`) || "{}",
 				)
 			: {};
-		const registryCache = isSignedIn
+		const registryCache = isSignedIn(me)
 			? JSON.parse(
 					localStorage.getItem(`${this.keyForLocalStorage}::cache::${me.id}`) ||
 						"{}",
@@ -65,7 +65,7 @@ export class Storage<T extends StateDef> {
 				state[k] = deviceState[k];
 			} else if (
 				v.where === "account" &&
-				isSignedIn &&
+				isSignedIn(me) &&
 				Object.prototype.hasOwnProperty.call(registryCache, k)
 			) {
 				state[k] = registryCache[k];
@@ -85,7 +85,7 @@ export class Storage<T extends StateDef> {
 		this.state = state as any;
 		this.reactiveState = reactiveState as any;
 
-		if (isSignedIn) {
+		if (isSignedIn(me)) {
 			// なぜかsetTimeoutしないとapi関数内でエラーになる(おそらく循環参照してることに原因がありそう)
 			window.setTimeout(() => {
 				api("i/registry/get-all", { scope: ["client", this.key] }).then(
@@ -169,7 +169,7 @@ export class Storage<T extends StateDef> {
 				break;
 			}
 			case "deviceAccount": {
-				if (!isSignedIn) break;
+				if (!isSignedIn(me)) break;
 				const deviceAccountState = JSON.parse(
 					localStorage.getItem(`${this.keyForLocalStorage}::${me.id}`) || "{}",
 				);
@@ -181,7 +181,7 @@ export class Storage<T extends StateDef> {
 				break;
 			}
 			case "account": {
-				if (!isSignedIn) break;
+				if (!isSignedIn(me)) break;
 				const cache = JSON.parse(
 					localStorage.getItem(`${this.keyForLocalStorage}::cache::${me.id}`) ||
 						"{}",
diff --git a/packages/client/src/scripts/get-note-menu.ts b/packages/client/src/scripts/get-note-menu.ts
index 25091f2da2..1bc2941acc 100644
--- a/packages/client/src/scripts/get-note-menu.ts
+++ b/packages/client/src/scripts/get-note-menu.ts
@@ -293,7 +293,7 @@ export function getNoteMenu(props: {
 	}
 
 	let menu: MenuItem[];
-	if (isSignedIn) {
+	if (isSignedIn(me)) {
 		const statePromise = os.api("notes/state", {
 			noteId: appearNote.id,
 		});
diff --git a/packages/client/src/scripts/get-user-menu.ts b/packages/client/src/scripts/get-user-menu.ts
index aac687d207..3ccb6c62a2 100644
--- a/packages/client/src/scripts/get-user-menu.ts
+++ b/packages/client/src/scripts/get-user-menu.ts
@@ -335,7 +335,7 @@ export function getUserMenu(user, router: Router = mainRouter) {
 		},
 	] as any;
 
-	if (isSignedIn && me.id !== user.id) {
+	if (isSignedIn(me) && me.id !== user.id) {
 		menu = menu.concat([
 			{
 				icon: user.isMuted ? "ph-eye ph-lg" : "ph-eye-slash ph-lg",
@@ -386,7 +386,7 @@ export function getUserMenu(user, router: Router = mainRouter) {
 		}
 	}
 
-	if (isSignedIn && me.id === user.id) {
+	if (isSignedIn(me) && me.id === user.id) {
 		menu = menu.concat([
 			null,
 			{
diff --git a/packages/client/src/scripts/please-login.ts b/packages/client/src/scripts/please-login.ts
index b66802b816..80c6e5b645 100644
--- a/packages/client/src/scripts/please-login.ts
+++ b/packages/client/src/scripts/please-login.ts
@@ -1,11 +1,11 @@
 import { defineAsyncComponent } from "vue";
-import { isSignedIn } from "@/me";
+import { isSignedIn, me } from "@/me";
 import { i18n } from "@/i18n";
 import { popup } from "@/os";
 import { vibrate } from "@/scripts/vibrate";
 
 export function pleaseLogin(path?: string) {
-	if (isSignedIn) return;
+	if (isSignedIn(me)) return;
 	vibrate(100);
 
 	popup(
diff --git a/packages/client/src/scripts/use-note-capture.ts b/packages/client/src/scripts/use-note-capture.ts
index 1bc32d5246..09043044cd 100644
--- a/packages/client/src/scripts/use-note-capture.ts
+++ b/packages/client/src/scripts/use-note-capture.ts
@@ -11,7 +11,7 @@ export function useNoteCapture(props: {
 	isDeletedRef: Ref<boolean>;
 }) {
 	const note = props.note;
-	const connection = isSignedIn ? useStream() : null;
+	const connection = isSignedIn(me) ? useStream() : null;
 
 	async function onStreamNoteUpdated(noteData): Promise<void> {
 		const { type, id, body } = noteData;
@@ -34,7 +34,7 @@ export function useNoteCapture(props: {
 
 				note.value.reactions[reaction] = currentCount + 1;
 
-				if (isSignedIn && body.userId === me.id) {
+				if (isSignedIn(me) && body.userId === me.id) {
 					note.value.myReaction = reaction;
 				}
 				break;
@@ -48,7 +48,7 @@ export function useNoteCapture(props: {
 
 				note.value.reactions[reaction] = Math.max(0, currentCount - 1);
 
-				if (isSignedIn && body.userId === me.id) {
+				if (isSignedIn(me) && body.userId === me.id) {
 					note.value.myReaction = undefined;
 				}
 				break;
@@ -62,7 +62,7 @@ export function useNoteCapture(props: {
 					choices[choice] = {
 						...choices[choice],
 						votes: choices[choice].votes + 1,
-						...(isSignedIn && body.userId === me.id
+						...(isSignedIn(me) && body.userId === me.id
 							? {
 									isVoted: true,
 								}
diff --git a/packages/client/src/store.ts b/packages/client/src/store.ts
index 0adc4e76db..fed9acc035 100644
--- a/packages/client/src/store.ts
+++ b/packages/client/src/store.ts
@@ -1,6 +1,6 @@
 import { markRaw, ref } from "vue";
 import type { ApiTypes, entities } from "firefish-js";
-import { isSignedIn } from "./me";
+import { isSignedIn, me } from "./me";
 import { Storage } from "./pizzax";
 import type { NoteVisibility } from "@/types/note";
 
@@ -167,7 +167,7 @@ export const defaultStore = markRaw(
 		tl: {
 			where: "deviceAccount",
 			default: {
-				src: (isSignedIn ? "home" : "local") as
+				src: (isSignedIn(me) ? "home" : "local") as
 					| "home"
 					| "local"
 					| "social"
diff --git a/packages/client/src/theme-store.ts b/packages/client/src/theme-store.ts
index a5957dea8f..bc344b339d 100644
--- a/packages/client/src/theme-store.ts
+++ b/packages/client/src/theme-store.ts
@@ -2,14 +2,14 @@ import type { Theme } from "./scripts/theme";
 import { isSignedIn, me } from "@/me";
 import { api } from "@/os";
 
-const lsCacheKey = isSignedIn ? `themes:${me.id}` : "";
+const lsCacheKey = isSignedIn(me) ? `themes:${me.id}` : "";
 
 export function getThemes(): Theme[] {
 	return JSON.parse(localStorage.getItem(lsCacheKey) || "[]");
 }
 
 export async function fetchThemes(): Promise<void> {
-	if (!isSignedIn) return;
+	if (!isSignedIn(me)) return;
 
 	try {
 		const themes = await api("i/registry/get", {
diff --git a/packages/client/src/ui/_common_/common.vue b/packages/client/src/ui/_common_/common.vue
index b4f20869b8..c90533581f 100644
--- a/packages/client/src/ui/_common_/common.vue
+++ b/packages/client/src/ui/_common_/common.vue
@@ -57,7 +57,7 @@ const onNotification = (notification) => {
 	sound.play("notification");
 };
 
-if (isSignedIn) {
+if (isSignedIn(me)) {
 	const connection = stream.useChannel("main", null, "UI");
 	connection.on("notification", onNotification);
 
diff --git a/packages/client/src/ui/deck.vue b/packages/client/src/ui/deck.vue
index cab107809d..3337841c0a 100644
--- a/packages/client/src/ui/deck.vue
+++ b/packages/client/src/ui/deck.vue
@@ -239,7 +239,7 @@ watch(route, () => {
 const columns = deckStore.reactiveState.columns;
 const layout = deckStore.reactiveState.layout;
 const menuIndicated = computed(() => {
-	if (!isSignedIn) return false;
+	if (!isSignedIn(me)) return false;
 	for (const def in navbarItemDef) {
 		if (navbarItemDef[def].indicated) return true;
 	}
diff --git a/packages/client/src/ui/deck/tl-column.vue b/packages/client/src/ui/deck/tl-column.vue
index ae26489b2a..1a4707988b 100644
--- a/packages/client/src/ui/deck/tl-column.vue
+++ b/packages/client/src/ui/deck/tl-column.vue
@@ -50,7 +50,7 @@ import type { Column } from "./deck-store";
 import { removeColumn, updateColumn } from "./deck-store";
 import XTimeline from "@/components/MkTimeline.vue";
 import * as os from "@/os";
-import { isModerator, isSignedIn } from "@/me";
+import { isModerator, isSignedIn, me } from "@/me";
 import { instance } from "@/instance";
 import { i18n } from "@/i18n";
 import icon from "@/scripts/icon";
@@ -72,7 +72,7 @@ const columnActive = ref(true);
 onMounted(() => {
 	if (props.column.tl == null) {
 		setType();
-	} else if (isSignedIn) {
+	} else if (isSignedIn(me)) {
 		disabled.value =
 			!isModerator &&
 			((instance.disableLocalTimeline &&