diff --git a/archaeologist/src/background.ts b/archaeologist/src/background.ts
index cd82e649..78c38460 100644
--- a/archaeologist/src/background.ts
+++ b/archaeologist/src/background.ts
@@ -40,6 +40,7 @@ import {
   makeAlwaysThrowingStorageApi,
   makeDatacenterStorageApi,
   processMsgFromMsgProxyStorageApi,
+  UserAccount,
 } from 'smuggler-api'
 
 import { makeBrowserExtStorageApi } from './storage_api_browser_ext'
@@ -824,17 +825,30 @@ async function initMazedPartsOfTab(
   }
 }
 
-function makeStorageApi(appSettings: AppSettings): StorageApi {
+function makeStorageApi(
+  appSettings: AppSettings,
+  account: UserAccount
+): StorageApi {
   switch (appSettings.storageType) {
     case 'datacenter':
       return makeDatacenterStorageApi()
     case 'browser_ext':
-      return makeBrowserExtStorageApi(browser.storage.local)
+      return makeBrowserExtStorageApi(browser.storage.local, account)
   }
 }
 
 async function initBackground() {
-  storage = makeStorageApi(await getAppSettings(browser.storage.local))
+  auth.observe({
+    onLogin: async (account: UserAccount) => {
+      storage = makeStorageApi(
+        await getAppSettings(browser.storage.local),
+        account
+      )
+    },
+    onLogout: () => {
+      storage = makeAlwaysThrowingStorageApi()
+    },
+  })
 
   browser.runtime.onMessage.addListener(
     async (
diff --git a/archaeologist/src/background/auth.ts b/archaeologist/src/background/auth.ts
index 07d35b34..5ed97946 100644
--- a/archaeologist/src/background/auth.ts
+++ b/archaeologist/src/background/auth.ts
@@ -7,7 +7,8 @@ import {
   UserAccount,
 } from 'smuggler-api'
 import { Knocker, authCookie } from 'smuggler-api'
-import { log, isAbortError } from 'armoury'
+import { log, isAbortError, errorise } from 'armoury'
+import { v4 as uuidv4 } from 'uuid'
 
 // Periodically renew auth token using Knocker
 const _authKnocker = new Knocker(
@@ -60,10 +61,35 @@ const _authKnocker = new Knocker(
 )
 
 let _account: AccountInterface = new AnonymousAccount()
-// External listener for login events
-let _onLoginListener: ((account: UserAccount) => void) | null = null
-// External listener for logout events
-let _onLogoutListener: (() => void) | null = null
+const _listeners: Map<
+  string /*listener ID*/,
+  {
+    // External listener for login events
+    onLogin: (account: UserAccount) => void
+    // External listener for logout events
+    onLogout: () => void
+  }
+> = new Map()
+
+function _onLogin(account: UserAccount) {
+  for (const { onLogin } of _listeners.values()) {
+    try {
+      onLogin(account)
+    } catch (reason) {
+      log.error(`onLogin listener failed: ${errorise(reason).message}`)
+    }
+  }
+}
+
+function _onLogout() {
+  for (const { onLogout } of _listeners.values()) {
+    try {
+      onLogout()
+    } catch (reason) {
+      log.error(`onLogin listener failed: ${errorise(reason).message}`)
+    }
+  }
+}
 
 function isAuthenticated(account: AccountInterface): account is UserAccount {
   return account.isAuthenticated()
@@ -91,9 +117,7 @@ async function _loginHandler() {
     if (!_authKnocker.isActive()) {
       await _authKnocker.start({ onKnockFailure })
     }
-    if (_onLoginListener) {
-      _onLoginListener(_account)
-    }
+    _onLogin(_account)
   }
   await badge.setActive(_account.isAuthenticated())
 }
@@ -103,9 +127,7 @@ async function _logoutHandler() {
   _account = new AnonymousAccount()
   await _authKnocker.abort()
   await badge.setActive(false)
-  if (_onLogoutListener) {
-    _onLogoutListener()
-  }
+  _onLogout()
 }
 
 // Actions to do on authorisation token renewal failure (knock of Knocker)
@@ -155,23 +177,16 @@ export function observe({
   onLogin: (account: UserAccount) => void
   onLogout: () => void
 }): () => void {
-  if (_onLoginListener != null || _onLogoutListener != null) {
-    throw new Error(
-      'Background authentication is already being observed, ' +
-        'to observe from multiple places the functionality has to be extended'
-    )
-  }
-  _onLoginListener = onLogin
-  _onLogoutListener = onLogout
+  const listenerId = uuidv4()
+  _listeners.set(listenerId, { onLogin, onLogout })
 
   const unregister = () => {
-    _onLoginListener = null
-    _onLogoutListener = null
+    _listeners.delete(listenerId)
   }
 
   try {
     if (isAuthenticated(_account)) {
-      _onLoginListener(_account)
+      onLogin(_account)
     }
   } catch (e) {
     unregister()
@@ -202,12 +217,9 @@ export async function register() {
     browser.cookies.onChanged.removeListener(onChangedCookiesListener)
     await _logoutHandler()
     try {
-      if (_onLogoutListener) {
-        _onLogoutListener()
-      }
+      _onLogout()
     } finally {
-      _onLoginListener = null
-      _onLogoutListener = null
+      _listeners.clear()
     }
   }
 }
diff --git a/archaeologist/src/storage_api_browser_ext.ts b/archaeologist/src/storage_api_browser_ext.ts
index cdf4039d..b39fb4ca 100644
--- a/archaeologist/src/storage_api_browser_ext.ts
+++ b/archaeologist/src/storage_api_browser_ext.ts
@@ -43,6 +43,7 @@ import type {
   ExternalIngestionAdvanceArgs,
   ExternalIngestionGetArgs,
   NodeGetAllNidsArgs,
+  UserAccount,
 } from 'smuggler-api'
 import {
   INodeIterator,
@@ -278,12 +279,12 @@ function generateEid(): Eid {
 
 async function createNode(
   store: YekLavStore,
-  args: NodeCreateArgs
+  args: NodeCreateArgs,
+  account: UserAccount
 ): Promise<NewNodeResponse> {
   // TODO[snikitin@outlook.com] Below keys must become functional somehow.
   // const _created_via: NodeCreatedVia | undefined = args.created_via
 
-  // TODO[snikitin@outlook.com] This graph structure has to work somehow
   const from_nid: Nid[] = args.from_nid ?? []
   const to_nid: Nid[] = args.to_nid ?? []
 
@@ -298,6 +299,9 @@ async function createNode(
     index_text: args.index_text,
     created_at: createdAt,
     updated_at: createdAt,
+    meta: {
+      uid: account.getUid(),
+    },
   }
 
   let records: YekLav[] = [
@@ -326,9 +330,7 @@ async function createNode(
       crtd: createdAt,
       upd: createdAt,
       is_sticky: false,
-      // TODO[snikitin@outlook.com] Evaluate if ownership support is needed
-      // and implement if yes
-      owned_by: 'todo',
+      owned_by: account.getUid(),
     }
     // Step 1: create records that allow to discover connected nodes from the
     // newly created node
@@ -487,12 +489,9 @@ class Iterator implements INodeIterator {
 
 async function createEdge(
   store: YekLavStore,
-  args: EdgeCreateArgs
+  args: EdgeCreateArgs,
+  account: UserAccount
 ): Promise<TEdge> {
-  // TODO[snikitin@outlook.com] Evaluate if ownership support is needed
-  // and implement if yes
-  const owned_by = 'todo'
-
   const createdAt: number = unixtime.now()
   const edge: TEdgeJson = {
     eid: generateEid(),
@@ -501,7 +500,7 @@ async function createEdge(
     crtd: createdAt,
     upd: createdAt,
     is_sticky: false,
-    owned_by,
+    owned_by: account.getUid(),
   }
 
   const items: YekLav[] = []
@@ -645,7 +644,8 @@ export async function getAllNids(
 }
 
 export function makeBrowserExtStorageApi(
-  browserStore: browser.Storage.StorageArea
+  browserStore: browser.Storage.StorageArea,
+  account: UserAccount
 ): StorageApi {
   const store = new YekLavStore(browserStore)
 
@@ -664,7 +664,7 @@ export function makeBrowserExtStorageApi(
       getByOrigin: (args: NodeGetByOriginArgs) => getNodesByOrigin(store, args),
       getAllNids: (args: NodeGetAllNidsArgs) => getAllNids(store, args),
       update: (args: NodeUpdateArgs) => updateNode(store, args),
-      create: (args: NodeCreateArgs) => createNode(store, args),
+      create: (args: NodeCreateArgs) => createNode(store, args, account),
       iterate: () => new Iterator(store),
       delete: throwUnimplementedError('node.delete'),
       bulkDelete: throwUnimplementedError('node.bulkdDelete'),
@@ -692,7 +692,7 @@ export function makeBrowserExtStorageApi(
       },
     },
     edge: {
-      create: (args: EdgeCreateArgs) => createEdge(store, args),
+      create: (args: EdgeCreateArgs) => createEdge(store, args, account),
       get: (args: EdgeGetArgs) => getNodeAllEdges(store, args),
       sticky: throwUnimplementedError('edge.sticky'),
       delete: throwUnimplementedError('edge.delete'),
diff --git a/truthsayer/src/App.tsx b/truthsayer/src/App.tsx
index edd78b23..59715e50 100644
--- a/truthsayer/src/App.tsx
+++ b/truthsayer/src/App.tsx
@@ -1,6 +1,6 @@
 /** @jsxImportSource @emotion/react */
 
-import React, { useCallback, useContext } from 'react'
+import React, { useCallback } from 'react'
 
 import {
   BrowserRouter as Router,
@@ -326,7 +326,7 @@ function PageviewEventTracker({ analytics }: { analytics: PostHog }) {
     // See https://posthog.com/docs/integrate/client/js#one-page-apps-and-page-views
     // for more information about pageview events in PostHog
     analytics.capture('$pageview')
-  }, [])
+  }, [analytics])
 
   const history = useHistory()
   React.useEffect(() => {
diff --git a/truthsayer/src/lib/global.tsx b/truthsayer/src/lib/global.tsx
index e5ea3947..52ea251e 100644
--- a/truthsayer/src/lib/global.tsx
+++ b/truthsayer/src/lib/global.tsx
@@ -5,7 +5,6 @@ import { PostHog } from 'posthog-js'
 
 import { jcss } from 'elementary'
 import {
-  AccountInterface,
   makeAlwaysThrowingStorageApi,
   makeDatacenterStorageApi,
   makeMsgProxyStorageApi,