diff --git a/src/handlers/devices.ts b/src/handlers/devices.ts
index eea33c3..a901d2e 100644
--- a/src/handlers/devices.ts
+++ b/src/handlers/devices.ts
@@ -2,6 +2,7 @@ import { Env } from '../types';
 import { StorageService } from '../services/storage';
 import { errorResponse, jsonResponse } from '../utils/response';
 import { readKnownDeviceProbe } from '../utils/device';
+import { generateUUID } from '../utils/uuid';
 
 // GET /api/devices/knowndevice
 // Compatible with Bitwarden/Vaultwarden behavior:
@@ -133,10 +134,29 @@ export async function handleDeleteDevice(
 
   const storage = new StorageService(env.DB);
   await storage.deleteTrustedTwoFactorTokensByDevice(userId, normalized);
+  await storage.deleteRefreshTokensByDevice(userId, normalized);
   const deleted = await storage.deleteDevice(userId, normalized);
   return jsonResponse({ success: deleted });
 }
 
+// DELETE /api/devices
+export async function handleDeleteAllDevices(request: Request, env: Env, userId: string): Promise<Response> {
+  void request;
+  const storage = new StorageService(env.DB);
+  const user = await storage.getUserById(userId);
+  if (!user) return errorResponse('User not found', 404);
+
+  const [removedTrusted, removedSessions, removedDevices] = await Promise.all([
+    storage.deleteTrustedTwoFactorTokensByUserId(userId),
+    storage.deleteRefreshTokensByUserId(userId),
+    storage.deleteDevicesByUserId(userId),
+  ]);
+  user.securityStamp = generateUUID();
+  user.updatedAt = new Date().toISOString();
+  await storage.saveUser(user);
+  return jsonResponse({ success: true, removedTrusted, removedSessions: removedSessions ?? 0, removedDevices });
+}
+
 // PUT /api/devices/identifier/{deviceIdentifier}/token
 // Bitwarden mobile reports push token updates to this endpoint.
 // NodeWarden does not implement push notifications, so accept and no-op.
diff --git a/src/handlers/identity.ts b/src/handlers/identity.ts
index c7f57ad..4eb6711 100644
--- a/src/handlers/identity.ts
+++ b/src/handlers/identity.ts
@@ -8,6 +8,7 @@ import { isTotpEnabled, verifyTotpToken } from '../utils/totp';
 import { createRefreshToken } from '../utils/jwt';
 import { readAuthRequestDeviceInfo } from '../utils/device';
 import { createRecoveryCode, recoveryCodeEquals } from '../utils/recovery-code';
+import { generateUUID } from '../utils/uuid';
 import { issueSendAccessToken } from './sends';
 import {
   buildAccountKeys,
@@ -227,15 +228,25 @@ export async function handleToken(request: Request, env: Env): Promise<Response>
     }
 
     // Persist device only after successful password + (optional) 2FA verification.
-    if (deviceInfo.deviceIdentifier) {
-      await storage.upsertDevice(user.id, deviceInfo.deviceIdentifier, deviceInfo.deviceName, deviceInfo.deviceType);
+    const deviceSession =
+      deviceInfo.deviceIdentifier
+        ? { identifier: deviceInfo.deviceIdentifier, sessionStamp: generateUUID() }
+        : null;
+    if (deviceSession) {
+      await storage.upsertDevice(
+        user.id,
+        deviceSession.identifier,
+        deviceInfo.deviceName,
+        deviceInfo.deviceType,
+        deviceSession.sessionStamp
+      );
     }
 
     // Successful login - clear failed attempts
     await rateLimit.clearLoginAttempts(loginIdentifier);
 
-    const accessToken = await auth.generateAccessToken(user);
-    const refreshToken = await auth.generateRefreshToken(user.id);
+    const accessToken = await auth.generateAccessToken(user, deviceSession);
+    const refreshToken = await auth.generateRefreshToken(user.id, deviceSession);
 
     const response: TokenResponse = {
       access_token: accessToken,
@@ -346,8 +357,8 @@ export async function handleToken(request: Request, env: Env): Promise<Response>
       Date.now() + LIMITS.auth.refreshTokenOverlapGraceMs
     );
 
-    const { accessToken, user } = result;
-    const newRefreshToken = await auth.generateRefreshToken(user.id);
+    const { accessToken, user, device } = result;
+    const newRefreshToken = await auth.generateRefreshToken(user.id, device);
 
     const response: TokenResponse = {
       access_token: accessToken,
diff --git a/src/router.ts b/src/router.ts
index 1b6fbc0..ee92bdd 100644
--- a/src/router.ts
+++ b/src/router.ts
@@ -75,6 +75,7 @@ import {
   handleGetDevices,
   handleRevokeAllTrustedDevices,
   handleRevokeTrustedDevice,
+  handleDeleteAllDevices,
   handleDeleteDevice,
   handleUpdateDeviceToken
 } from './handlers/devices';
@@ -750,8 +751,9 @@ export async function handleRequest(request: Request, env: Env): Promise<Respons
     }
 
     // Devices endpoint
-    if (path === '/api/devices' && method === 'GET') {
-      return handleGetDevices(request, env, userId);
+    if (path === '/api/devices') {
+      if (method === 'GET') return handleGetDevices(request, env, userId);
+      if (method === 'DELETE') return handleDeleteAllDevices(request, env, userId);
     }
 
     if (path === '/api/devices/authorized') {
diff --git a/src/services/auth.ts b/src/services/auth.ts
index cf73386..ec81541 100644
--- a/src/services/auth.ts
+++ b/src/services/auth.ts
@@ -61,22 +61,23 @@ export class AuthService {
   }
 
   // Generate access token
-  async generateAccessToken(user: User): Promise<string> {
+  async generateAccessToken(user: User, device?: { identifier: string; sessionStamp: string } | null): Promise<string> {
     return createJWT(
       {
         sub: user.id,
         email: user.email,
         name: user.name,
         sstamp: user.securityStamp,
+        ...(device?.identifier ? { did: device.identifier, dstamp: device.sessionStamp } : {}),
       },
       this.env.JWT_SECRET
     );
   }
 
   // Generate refresh token
-  async generateRefreshToken(userId: string): Promise<string> {
+  async generateRefreshToken(userId: string, device?: { identifier: string; sessionStamp: string } | null): Promise<string> {
     const token = createRefreshToken();
-    await this.storage.saveRefreshToken(token, userId);
+    await this.storage.saveRefreshToken(token, userId, undefined, device?.identifier ?? null, device?.sessionStamp ?? null);
     return token;
   }
 
@@ -100,22 +101,44 @@ export class AuthService {
       return null; // Token was issued before password change
     }
 
+    if (payload.did) {
+      const device = await this.storage.getDevice(user.id, payload.did);
+      if (!device) return null;
+      if (!payload.dstamp || payload.dstamp !== device.sessionStamp) return null;
+    }
+
     return payload;
   }
 
   // Refresh access token
-  async refreshAccessToken(refreshToken: string): Promise<{ accessToken: string; user: User } | null> {
-    const userId = await this.storage.getRefreshTokenUserId(refreshToken);
-    if (!userId) return null;
+  async refreshAccessToken(
+    refreshToken: string
+  ): Promise<{ accessToken: string; user: User; device: { identifier: string; sessionStamp: string } | null } | null> {
+    const record = await this.storage.getRefreshTokenRecord(refreshToken);
+    if (!record?.userId) return null;
 
-    const user = await this.storage.getUserById(userId);
+    const user = await this.storage.getUserById(record.userId);
     if (!user) return null;
     if (user.status !== 'active') {
       await this.storage.deleteRefreshToken(refreshToken);
       return null;
     }
 
-    const accessToken = await this.generateAccessToken(user);
-    return { accessToken, user };
+    let device: { identifier: string; sessionStamp: string } | null = null;
+    if (record.deviceIdentifier) {
+      const boundDevice = await this.storage.getDevice(user.id, record.deviceIdentifier);
+      if (!boundDevice) {
+        await this.storage.deleteRefreshToken(refreshToken);
+        return null;
+      }
+      if (!record.deviceSessionStamp || boundDevice.sessionStamp !== record.deviceSessionStamp) {
+        await this.storage.deleteRefreshToken(refreshToken);
+        return null;
+      }
+      device = { identifier: boundDevice.deviceIdentifier, sessionStamp: boundDevice.sessionStamp };
+    }
+
+    const accessToken = await this.generateAccessToken(user, device);
+    return { accessToken, user, device };
   }
 }
diff --git a/src/services/storage.ts b/src/services/storage.ts
index 01842a7..2320d45 100644
--- a/src/services/storage.ts
+++ b/src/services/storage.ts
@@ -1,4 +1,4 @@
-import { User, Cipher, Folder, Attachment, Device, Invite, AuditLog, Send, SendAuthType, TrustedDeviceTokenSummary } from '../types';
+import { User, Cipher, Folder, Attachment, Device, Invite, AuditLog, Send, SendAuthType, TrustedDeviceTokenSummary, RefreshTokenRecord } from '../types';
 import { LIMITS } from '../config/limits';
 
 const TWO_FACTOR_REMEMBER_TTL_MS = 30 * 24 * 60 * 60 * 1000;
@@ -52,9 +52,11 @@ const SCHEMA_STATEMENTS: readonly string[] = [
   'ALTER TABLE sends ADD COLUMN emails TEXT',
 
   'CREATE TABLE IF NOT EXISTS refresh_tokens (' +
-  'token TEXT PRIMARY KEY, user_id TEXT NOT NULL, expires_at INTEGER NOT NULL, ' +
+  'token TEXT PRIMARY KEY, user_id TEXT NOT NULL, expires_at INTEGER NOT NULL, device_identifier TEXT, device_session_stamp TEXT, ' +
   'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
   'CREATE INDEX IF NOT EXISTS idx_refresh_tokens_user ON refresh_tokens(user_id)',
+  'ALTER TABLE refresh_tokens ADD COLUMN device_identifier TEXT',
+  'ALTER TABLE refresh_tokens ADD COLUMN device_session_stamp TEXT',
 
   'CREATE TABLE IF NOT EXISTS invites (' +
   'code TEXT PRIMARY KEY, created_by TEXT NOT NULL, used_by TEXT, expires_at TEXT NOT NULL, status TEXT NOT NULL, created_at TEXT NOT NULL, updated_at TEXT NOT NULL, ' +
@@ -70,11 +72,14 @@ const SCHEMA_STATEMENTS: readonly string[] = [
   'CREATE INDEX IF NOT EXISTS idx_audit_logs_actor_created ON audit_logs(actor_user_id, created_at)',
 
   'CREATE TABLE IF NOT EXISTS devices (' +
-  'user_id TEXT NOT NULL, device_identifier TEXT NOT NULL, name TEXT NOT NULL, type INTEGER NOT NULL, ' +
+  'user_id TEXT NOT NULL, device_identifier TEXT NOT NULL, name TEXT NOT NULL, type INTEGER NOT NULL, session_stamp TEXT, banned INTEGER NOT NULL DEFAULT 0, banned_at TEXT, ' +
   'created_at TEXT NOT NULL, updated_at TEXT NOT NULL, ' +
   'PRIMARY KEY (user_id, device_identifier), ' +
   'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
   'CREATE INDEX IF NOT EXISTS idx_devices_user_updated ON devices(user_id, updated_at)',
+  'ALTER TABLE devices ADD COLUMN session_stamp TEXT',
+  'ALTER TABLE devices ADD COLUMN banned INTEGER NOT NULL DEFAULT 0',
+  'ALTER TABLE devices ADD COLUMN banned_at TEXT',
 
   'CREATE TABLE IF NOT EXISTS trusted_two_factor_device_tokens (' +
   'token TEXT PRIMARY KEY, user_id TEXT NOT NULL, device_identifier TEXT NOT NULL, expires_at INTEGER NOT NULL, ' +
@@ -749,40 +754,57 @@ export class StorageService {
 
   // --- Refresh tokens ---
 
-  async saveRefreshToken(token: string, userId: string, expiresAtMs?: number): Promise<void> {
+  async saveRefreshToken(
+    token: string,
+    userId: string,
+    expiresAtMs?: number,
+    deviceIdentifier?: string | null,
+    deviceSessionStamp?: string | null
+  ): Promise<void> {
     const expiresAt = expiresAtMs ?? (Date.now() + LIMITS.auth.refreshTokenTtlMs);
     await this.maybeCleanupExpiredRefreshTokens(Date.now());
     const tokenKey = await this.refreshTokenKey(token);
     await this.db.prepare(
-      'INSERT INTO refresh_tokens(token, user_id, expires_at) VALUES(?, ?, ?) ' +
-      'ON CONFLICT(token) DO UPDATE SET user_id=excluded.user_id, expires_at=excluded.expires_at'
+      'INSERT INTO refresh_tokens(token, user_id, expires_at, device_identifier, device_session_stamp) VALUES(?, ?, ?, ?, ?) ' +
+      'ON CONFLICT(token) DO UPDATE SET user_id=excluded.user_id, expires_at=excluded.expires_at, device_identifier=excluded.device_identifier, device_session_stamp=excluded.device_session_stamp'
     )
-      .bind(tokenKey, userId, expiresAt)
+      .bind(tokenKey, userId, expiresAt, deviceIdentifier ?? null, deviceSessionStamp ?? null)
       .run();
   }
 
-  async getRefreshTokenUserId(token: string): Promise<string | null> {
+  async getRefreshTokenRecord(token: string): Promise<RefreshTokenRecord | null> {
     const now = Date.now();
     await this.maybeCleanupExpiredRefreshTokens(now);
     const tokenKey = await this.refreshTokenKey(token);
 
-    let row = await this.db.prepare('SELECT user_id, expires_at FROM refresh_tokens WHERE token = ?')
+    let row = await this.db.prepare('SELECT user_id, expires_at, device_identifier, device_session_stamp FROM refresh_tokens WHERE token = ?')
       .bind(tokenKey)
-      .first<{ user_id: string; expires_at: number }>();
+      .first<{ user_id: string; expires_at: number; device_identifier: string | null; device_session_stamp: string | null }>();
 
     if (!row) {
-      const legacyRow = await this.db.prepare('SELECT user_id, expires_at FROM refresh_tokens WHERE token = ?')
+      const legacyRow = await this.db.prepare('SELECT user_id, expires_at, device_identifier, device_session_stamp FROM refresh_tokens WHERE token = ?')
         .bind(token)
-        .first<{ user_id: string; expires_at: number }>();
+        .first<{ user_id: string; expires_at: number; device_identifier: string | null; device_session_stamp: string | null }>();
 
       if (legacyRow) {
         if (legacyRow.expires_at && legacyRow.expires_at < now) {
           await this.deleteRefreshToken(token);
           return null;
         }
-        await this.saveRefreshToken(token, legacyRow.user_id, legacyRow.expires_at);
+        await this.saveRefreshToken(
+          token,
+          legacyRow.user_id,
+          legacyRow.expires_at,
+          legacyRow.device_identifier ?? null,
+          legacyRow.device_session_stamp ?? null
+        );
         await this.db.prepare('DELETE FROM refresh_tokens WHERE token = ?').bind(token).run();
-        return legacyRow.user_id;
+        return {
+          userId: legacyRow.user_id,
+          expiresAt: legacyRow.expires_at,
+          deviceIdentifier: legacyRow.device_identifier ?? null,
+          deviceSessionStamp: legacyRow.device_session_stamp ?? null,
+        };
       }
     }
 
@@ -791,7 +813,17 @@ export class StorageService {
       await this.deleteRefreshToken(token);
       return null;
     }
-    return row.user_id;
+    return {
+      userId: row.user_id,
+      expiresAt: row.expires_at,
+      deviceIdentifier: row.device_identifier ?? null,
+      deviceSessionStamp: row.device_session_stamp ?? null,
+    };
+  }
+
+  async getRefreshTokenUserId(token: string): Promise<string | null> {
+    const record = await this.getRefreshTokenRecord(token);
+    return record?.userId ?? null;
   }
 
   async deleteRefreshToken(token: string): Promise<void> {
@@ -915,8 +947,17 @@ export class StorageService {
     return (res.results || []).map(row => this.mapSendRow(row));
   }
 
-  async deleteRefreshTokensByUserId(userId: string): Promise<void> {
-    await this.db.prepare('DELETE FROM refresh_tokens WHERE user_id = ?').bind(userId).run();
+  async deleteRefreshTokensByUserId(userId: string): Promise<number> {
+    const result = await this.db.prepare('DELETE FROM refresh_tokens WHERE user_id = ?').bind(userId).run();
+    return Number(result.meta.changes ?? 0);
+  }
+
+  async deleteRefreshTokensByDevice(userId: string, deviceIdentifier: string): Promise<number> {
+    const result = await this.db
+      .prepare('DELETE FROM refresh_tokens WHERE user_id = ? AND device_identifier = ?')
+      .bind(userId, deviceIdentifier)
+      .run();
+    return Number(result.meta.changes ?? 0);
   }
 
   // Keep a short overlap window for rotated refresh token to reduce
@@ -946,13 +987,14 @@ export class StorageService {
 
   // --- Devices ---
 
-  async upsertDevice(userId: string, deviceIdentifier: string, name: string, type: number): Promise<void> {
+  async upsertDevice(userId: string, deviceIdentifier: string, name: string, type: number, sessionStamp?: string): Promise<void> {
     const now = new Date().toISOString();
+    const effectiveSessionStamp = String(sessionStamp || '').trim() || (await this.getDevice(userId, deviceIdentifier))?.sessionStamp || '';
     await this.db.prepare(
-      'INSERT INTO devices(user_id, device_identifier, name, type, created_at, updated_at) VALUES(?, ?, ?, ?, ?, ?) ' +
-      'ON CONFLICT(user_id, device_identifier) DO UPDATE SET name=excluded.name, type=excluded.type, updated_at=excluded.updated_at'
+      'INSERT INTO devices(user_id, device_identifier, name, type, session_stamp, banned, banned_at, created_at, updated_at) VALUES(?, ?, ?, ?, ?, 0, NULL, ?, ?) ' +
+      'ON CONFLICT(user_id, device_identifier) DO UPDATE SET name=excluded.name, type=excluded.type, session_stamp=excluded.session_stamp, updated_at=excluded.updated_at'
     )
-      .bind(userId, deviceIdentifier, name, type, now, now)
+      .bind(userId, deviceIdentifier, name, type, effectiveSessionStamp, now, now)
       .run();
   }
 
@@ -973,7 +1015,7 @@ export class StorageService {
   async getDevicesByUserId(userId: string): Promise<Device[]> {
     const res = await this.db
       .prepare(
-        'SELECT user_id, device_identifier, name, type, created_at, updated_at ' +
+        'SELECT user_id, device_identifier, name, type, session_stamp, banned, banned_at, created_at, updated_at ' +
         'FROM devices WHERE user_id = ? ORDER BY updated_at DESC'
       )
       .bind(userId)
@@ -983,11 +1025,32 @@ export class StorageService {
       deviceIdentifier: row.device_identifier,
       name: row.name,
       type: row.type,
+      sessionStamp: row.session_stamp || '',
       createdAt: row.created_at,
       updatedAt: row.updated_at,
     }));
   }
 
+  async getDevice(userId: string, deviceIdentifier: string): Promise<Device | null> {
+    const row = await this.db
+      .prepare(
+        'SELECT user_id, device_identifier, name, type, session_stamp, banned, banned_at, created_at, updated_at ' +
+        'FROM devices WHERE user_id = ? AND device_identifier = ? LIMIT 1'
+      )
+      .bind(userId, deviceIdentifier)
+      .first<any>();
+    if (!row) return null;
+    return {
+      userId: row.user_id,
+      deviceIdentifier: row.device_identifier,
+      name: row.name,
+      type: row.type,
+      sessionStamp: row.session_stamp || '',
+      createdAt: row.created_at,
+      updatedAt: row.updated_at,
+    };
+  }
+
   async deleteDevice(userId: string, deviceIdentifier: string): Promise<boolean> {
     const result = await this.db
       .prepare('DELETE FROM devices WHERE user_id = ? AND device_identifier = ?')
@@ -996,6 +1059,14 @@ export class StorageService {
     return Number(result.meta.changes ?? 0) > 0;
   }
 
+  async deleteDevicesByUserId(userId: string): Promise<number> {
+    const result = await this.db
+      .prepare('DELETE FROM devices WHERE user_id = ?')
+      .bind(userId)
+      .run();
+    return Number(result.meta.changes ?? 0);
+  }
+
   async getTrustedDeviceTokenSummariesByUserId(userId: string): Promise<TrustedDeviceTokenSummary[]> {
     const now = Date.now();
     await this.db.prepare('DELETE FROM trusted_two_factor_device_tokens WHERE expires_at < ?').bind(now).run();
diff --git a/src/types/index.ts b/src/types/index.ts
index b521fb4..71dd79d 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -183,10 +183,18 @@ export interface Device {
   deviceIdentifier: string;
   name: string;
   type: number;
+  sessionStamp: string;
   createdAt: string;
   updatedAt: string;
 }
 
+export interface RefreshTokenRecord {
+  userId: string;
+  expiresAt: number;
+  deviceIdentifier: string | null;
+  deviceSessionStamp: string | null;
+}
+
 export interface TrustedDeviceTokenSummary {
   deviceIdentifier: string;
   expiresAt: number;
@@ -257,6 +265,8 @@ export interface JWTPayload {
   email_verified: boolean; // required by mobile client
   amr: string[];    // authentication methods reference - required by mobile client
   sstamp: string;   // security stamp - invalidates token when user changes password
+  did?: string;     // device identifier - invalidates per-device sessions
+  dstamp?: string;  // device session stamp
   iat: number;
   exp: number;
   iss: string;
diff --git a/webapp/src/App.tsx b/webapp/src/App.tsx
index 18208ee..59c3389 100644
--- a/webapp/src/App.tsx
+++ b/webapp/src/App.tsx
@@ -43,6 +43,7 @@ import {
   getPreloginKdfConfig,
   getProfile,
   getAuthorizedDevices,
+  getCurrentDeviceIdentifier,
   getSetupStatus,
   getSends,
   getTotpStatus,
@@ -60,6 +61,7 @@ import {
   saveSession,
   setTotp,
   setUserStatus,
+  deleteAllAuthorizedDevices,
   deleteAuthorizedDevice,
   uploadCipherAttachment,
   updateCipher,
@@ -969,10 +971,21 @@ export default function App() {
 
   async function removeDeviceAction(device: AuthorizedDevice) {
     await deleteAuthorizedDevice(authedFetch, device.identifier);
+    if (device.identifier === getCurrentDeviceIdentifier()) {
+      pushToast('success', t('txt_device_removed'));
+      logoutNow();
+      return;
+    }
     await authorizedDevicesQuery.refetch();
     pushToast('success', t('txt_device_removed'));
   }
 
+  async function removeAllDevicesAction() {
+    await deleteAllAuthorizedDevices(authedFetch);
+    pushToast('success', t('txt_all_devices_removed'));
+    logoutNow();
+  }
+
   async function createVaultItem(draft: VaultDraft, attachments: File[] = []) {
     if (!session) return;
     try {
@@ -2004,7 +2017,7 @@ export default function App() {
                       onRemoveDevice={(device) => {
                         setConfirm({
                           title: t('txt_remove_device'),
-                          message: t('txt_remove_device_name_and_clear_its_2fa_trust', { name: device.name }),
+                          message: t('txt_remove_device_and_sign_out_name', { name: device.name }),
                           danger: true,
                           onConfirm: () => {
                             setConfirm(null);
@@ -2023,6 +2036,17 @@ export default function App() {
                           },
                         });
                       }}
+                      onRemoveAll={() => {
+                        setConfirm({
+                          title: t('txt_remove_all_devices'),
+                          message: t('txt_remove_all_devices_and_sign_out_all_sessions'),
+                          danger: true,
+                          onConfirm: () => {
+                            setConfirm(null);
+                            void removeAllDevicesAction();
+                          },
+                        });
+                      }}
                     />
                   </div>
                 </Route>
diff --git a/webapp/src/components/SecurityDevicesPage.tsx b/webapp/src/components/SecurityDevicesPage.tsx
index 7c76b33..f01e8c7 100644
--- a/webapp/src/components/SecurityDevicesPage.tsx
+++ b/webapp/src/components/SecurityDevicesPage.tsx
@@ -9,6 +9,7 @@ interface SecurityDevicesPageProps {
   onRevokeTrust: (device: AuthorizedDevice) => void;
   onRemoveDevice: (device: AuthorizedDevice) => void;
   onRevokeAll: () => void;
+  onRemoveAll: () => void;
 }
 
 function formatDateTime(value: string | null | undefined): string {
@@ -47,7 +48,7 @@ export default function SecurityDevicesPage(props: SecurityDevicesPageProps) {
           <div>
             <h3 style={{ margin: 0 }}>{t('txt_device_management')}</h3>
             <div className="muted-inline" style={{ marginTop: 4 }}>
-              {t('txt_manage_authorized_devices_and_30_day_totp_trusted_sessions')}
+              {t('txt_manage_device_sessions_and_30_day_totp_trusted_sessions')}
             </div>
           </div>
           <div className="actions">
@@ -59,6 +60,10 @@ export default function SecurityDevicesPage(props: SecurityDevicesPageProps) {
               <ShieldOff size={14} className="btn-icon" />
               {t('txt_revoke_all_trusted')}
             </button>
+            <button type="button" className="btn btn-danger small" onClick={props.onRemoveAll}>
+              <Trash2 size={14} className="btn-icon" />
+              {t('txt_remove_all_devices')}
+            </button>
           </div>
         </div>
       </section>
diff --git a/webapp/src/lib/api.ts b/webapp/src/lib/api.ts
index 8981455..db51db7 100644
--- a/webapp/src/lib/api.ts
+++ b/webapp/src/lib/api.ts
@@ -119,6 +119,10 @@ function getOrCreateDeviceIdentifier(): string {
   return next;
 }
 
+export function getCurrentDeviceIdentifier(): string {
+  return (localStorage.getItem(DEVICE_IDENTIFIER_KEY) || '').trim();
+}
+
 function guessDeviceName(): string {
   const ua = (typeof navigator !== 'undefined' ? navigator.userAgent : '').toLowerCase();
   const platform = (typeof navigator !== 'undefined' ? navigator.platform : '').trim();
@@ -772,6 +776,13 @@ export async function deleteAuthorizedDevice(
   if (!resp.ok) throw new Error('Failed to remove device');
 }
 
+export async function deleteAllAuthorizedDevices(
+  authedFetch: (input: string, init?: RequestInit) => Promise<Response>
+): Promise<void> {
+  const resp = await authedFetch('/api/devices', { method: 'DELETE' });
+  if (!resp.ok) throw new Error('Failed to remove all devices');
+}
+
 export async function listAdminUsers(authedFetch: (input: string, init?: RequestInit) => Promise<Response>): Promise<AdminUser[]> {
   const resp = await authedFetch('/api/admin/users');
   if (!resp.ok) throw new Error('Failed to load users');
diff --git a/webapp/src/lib/i18n.ts b/webapp/src/lib/i18n.ts
index 28c37c4..1a75688 100644
--- a/webapp/src/lib/i18n.ts
+++ b/webapp/src/lib/i18n.ts
@@ -232,6 +232,7 @@ const messages: Record<Locale, Record<string, string>> = {
     txt_login_success: "Login success",
     txt_macos_desktop: "macOS Desktop",
     txt_manage_authorized_devices_and_30_day_totp_trusted_sessions: "Manage authorized devices and 30-day TOTP trusted sessions.",
+    txt_manage_device_sessions_and_30_day_totp_trusted_sessions: "Manage device sessions and 30-day TOTP trusted sessions.",
     txt_master_password: "Master Password",
     txt_master_password_changed_please_login_again: "Master password changed. Please login again.",
     txt_master_password_is_required: "Master password is required",
@@ -301,7 +302,11 @@ const messages: Record<Locale, Record<string, string>> = {
     txt_ignore: "Ignore",
     txt_remove_device: "Remove device",
     txt_remove_device_2: "Remove Device",
+    txt_remove_all_devices: "Remove all devices",
+    txt_remove_all_devices_and_clear_all_2fa_trust: "Remove all devices and clear all 2FA trust?",
+    txt_remove_all_devices_and_sign_out_all_sessions: "Remove all devices, clear all trust, and sign out every device?",
     txt_remove_device_name_and_clear_its_2fa_trust: "Remove device \"{name}\" and clear its 2FA trust?",
+    txt_remove_device_and_sign_out_name: "Remove device \"{name}\", clear its trust, and sign it out?",
     txt_reveal: "Reveal",
     txt_revoke: "Revoke",
     txt_revoke_30_day_totp_trust_for_name: "Revoke 30-day TOTP trust for \"{name}\"?",
@@ -384,6 +389,7 @@ const messages: Record<Locale, Record<string, string>> = {
     txt_unlock_vault: "Unlock Vault",
     txt_unignore: "Unignore",
     txt_unlocked: "Unlocked",
+    txt_all_devices_removed: "All devices removed",
     txt_update_item_failed: "Update item failed",
     txt_update_send_failed: "Update send failed",
     txt_use_recovery_code: "Use Recovery Code",
@@ -610,6 +616,7 @@ const zhCNOverrides: Record<string, string> = {
   txt_copy_secret: '复制密钥',
   txt_this_is_a_one_time_code_after_it_is_used_a_new_code_is_generated_automatically: '这是一次性恢复代码，使用后将自动生成新的恢复代码。',
   txt_manage_authorized_devices_and_30_day_totp_trusted_sessions: '管理已授权设备和 30 天 TOTP 受信会话。',
+  txt_manage_device_sessions_and_30_day_totp_trusted_sessions: '管理设备会话和 30 天 TOTP 受信状态。',
   txt_role: '角色',
   txt_status: '状态',
   txt_actions: '操作',
@@ -619,6 +626,10 @@ const zhCNOverrides: Record<string, string> = {
   txt_revoke_30_day_totp_trust_from_all_devices: '确认撤销所有设备的 30 天 TOTP 信任吗？',
   txt_revoke_30_day_totp_trust_for_name: '确认撤销“{name}”的 30 天 TOTP 信任吗？',
   txt_remove_device_name_and_clear_its_2fa_trust: '确认移除设备“{name}”并清除其 2FA 信任吗？',
+  txt_remove_all_devices: '移除所有设备',
+  txt_remove_all_devices_and_clear_all_2fa_trust: '确认移除所有设备并清除全部 2FA 信任吗？',
+  txt_remove_all_devices_and_sign_out_all_sessions: '确认移除所有设备、清除全部信任，并让所有设备重新登录吗？',
+  txt_remove_device_and_sign_out_name: '确认移除设备“{name}”、清除其信任，并让它重新登录吗？',
   txt_role_admin: '管理员',
   txt_role_user: '用户',
   txt_status_active: '正常',
@@ -766,6 +777,7 @@ const zhCNOverrides: Record<string, string> = {
   txt_unlock_failed: '解锁失败',
   txt_unlock_failed_master_password_is_incorrect: '解锁失败，主密码不正确。',
   txt_unlocked: '已解锁',
+  txt_all_devices_removed: '已移除所有设备',
   txt_update_item_failed: '更新项目失败',
   txt_update_send_failed: '更新发送失败',
   txt_use_your_one_time_recovery_code_to_disable_two_step_verification: '使用一次性恢复代码禁用两步验证。',