diff --git a/.vscode/settings.json b/.vscode/settings.json
index 8eb4571..1d7a9db 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -25,7 +25,8 @@
   ],
   "cSpell.language": "en,fa,fa-IR",
   "cSpell.words": [
-    "Alwatr"
+    "alwatr",
+    "nanoservice"
   ],
   "typescript.tsdk": ".yarn/sdks/typescript/lib",
   "git.autoStash": true,
diff --git a/packages/nano-server/src/nano-server.ts b/packages/nano-server/src/nano-server.ts
index 1172350..9e9ca49 100644
--- a/packages/nano-server/src/nano-server.ts
+++ b/packages/nano-server/src/nano-server.ts
@@ -3,7 +3,7 @@ import {createServer} from 'node:http';
 import {createLogger, definePackage, type AlwatrLogger} from '@alwatr/logger';
 import {isNumber} from '@alwatr/math';
 
-import type {NanoServerConfig, ConnectionConfig} from './type.js';
+import type {NanoServerConfig, ConnectionConfig, UserAuth} from './type';
 import type {
   AlwatrServiceResponse,
   AlwatrServiceResponseFailed,
@@ -16,7 +16,6 @@ import type {
   QueryParameters,
   Stringifyable,
   StringifyableRecord,
-  UserAuth,
 } from '@alwatr/type';
 import type {IncomingMessage, ServerResponse} from 'node:http';
 import type {Duplex} from 'node:stream';
@@ -33,6 +32,7 @@ export type {
   AlwatrServiceResponseFailed,
   AlwatrServiceResponseSuccess,
   AlwatrServiceResponseSuccessWithMeta,
+  UserAuth,
 };
 
 definePackage('nano-server', '1.x');
@@ -398,19 +398,6 @@ export class AlwatrConnection {
     this._logger.logMethodArgs?.('constructor', {method: incomingMessage.method, url: incomingMessage.url});
   }
 
-  /**
-   * Get the token placed in the request header.
-   */
-  getAuthBearer(): string | null {
-    const auth = this.incomingMessage.headers.authorization?.split(' ');
-
-    if (auth == null || auth[0].toLowerCase() !== 'bearer') {
-      return null;
-    }
-
-    return auth[1];
-  }
-
   /**
    * Get request body for POST, PUT and POST methods.
    *
@@ -482,64 +469,58 @@ export class AlwatrConnection {
   }
 
   /**
-   * Parse and validate request token.
+   * Get the user authentication information from the incoming message headers.
    *
-   * @returns Request token.
+   * @returns An object containing the user authentication information.
    *
-   * Example:
+   * @example
    * ```ts
-   * const token = connection.requireToken((token) => token.length > 12);
-   * if (token == null) return;
+   * const userAuth = connection.getUserAuth();
    * ```
    */
-  requireToken(validator?: ((token: string) => boolean) | string[] | string): string {
-    const token = this.getAuthBearer();
-
-    if (token == null) {
-      throw {
-        ok: false,
-        statusCode: 401,
-        errorCode: 'authorization_required',
-      };
-    }
-    else if (validator === undefined) {
-      return token;
-    }
-    else if (typeof validator === 'string') {
-      if (token === validator) return token;
-    }
-    else if (Array.isArray(validator)) {
-      if (validator.includes(token)) return token;
-    }
-    else if (typeof validator === 'function') {
-      if (validator(token) === true) return token;
-    }
-    throw {
-      ok: false,
-      statusCode: 403,
-      errorCode: 'access_denied',
+  getUserAuth(): Partial<UserAuth> {
+    const userId = this.incomingMessage.headers['user-id'];
+    const userToken = this.incomingMessage.headers['user-token'];
+    const deviceId = this.incomingMessage.headers['device-id'];
+
+    return {
+      id: userId,
+      token: userToken,
+      deviceId: deviceId,
     };
   }
 
   /**
-   * Parse and get request user auth (include id and token).
+   * Get and validate the user authentication.
    *
-   * Example:
+   * @param validator Optional function to validate the user authentication.
+   * @returns The user authentication information.
+   * @throws {'access_denied'} If user authentication is missing or validation fails.
+   *
+   * @example
    * ```ts
    * const userAuth = connection.requireUserAuth();
    * ```
    */
-  getUserAuth(): UserAuth | null {
-    const auth = this.getAuthBearer()
-      ?.split('/')
-      .filter((item) => item.trim() !== '');
-
-    return auth == null || auth.length !== 2
-      ? null
-      : {
-        id: auth[0],
-        token: auth[1],
+  requireUserAuth(validator?: (userAuth: Partial<UserAuth>) => boolean): UserAuth {
+    const userAuth = this.getUserAuth();
+
+    if (userAuth.id == null || userAuth.token == null || userAuth.deviceId == null) {
+      throw {
+        ok: false,
+        statusCode: 401,
+        errorCode: 'authorization_required',
       };
+    }
+    else if (typeof validator === 'function' && validator(userAuth) !== true) {
+      throw {
+        ok: false,
+        statusCode: 403,
+        errorCode: 'access_denied',
+      };
+    }
+
+    return userAuth as UserAuth;
   }
 
   /**
@@ -622,19 +603,4 @@ export class AlwatrConnection {
       'unknown'
     );
   }
-
-  requireClientId(): string {
-    const clientId = this.incomingMessage.headers['client-id'];
-
-    if (!clientId) {
-      // eslint-disable-next-line no-throw-literal
-      throw {
-        ok: false,
-        statusCode: 401,
-        errorCode: 'client_denied',
-      };
-    }
-
-    return clientId;
-  }
 }
diff --git a/packages/nano-server/src/type.ts b/packages/nano-server/src/type.ts
index 755a04f..9e3c4d6 100644
--- a/packages/nano-server/src/type.ts
+++ b/packages/nano-server/src/type.ts
@@ -1,9 +1,20 @@
 declare module 'http' {
   interface IncomingHttpHeaders {
     /**
-     * Alwatr Client UUID
+     * Alwatr Device UUID
      */
-    'client-id'?: string;
+    'device-id'?: string;
+
+    /**
+     * User id
+     */
+    'user-id'?: string;
+
+    /**
+     * User token
+     */
+    'user-token'?: string;
+
 
     'x-forwarded-for'?: string;
   }
@@ -87,3 +98,9 @@ export interface ConnectionConfig {
 
 export type ParamKeyType = 'string' | 'number' | 'boolean';
 export type ParamValueType = string | number | boolean | null;
+
+export interface UserAuth {
+  id: string;
+  token: string;
+  deviceId: string;
+}