diff --git a/src/server.js b/src/server.js
index cf55f25..8bda57b 100644
--- a/src/server.js
+++ b/src/server.js
@@ -606,6 +606,176 @@ app.post('/api/verify-code', validatePhoneNumber, (req, res) => {
 
 //------------------------------------ End of SMS Section ------------------------------------
 
+//------------------------------------ Signer Client Integration -----------------------------------------
+
+const { SDKSignerClient } = require('sdk-signer-client');
+
+// Signer client configuration
+const signerConfig = {
+  url: process.env.SIGNER_WS_URL || 'ws://localhost:9090',
+  apiKey: process.env.SIGNER_API_KEY || 'your-api-key-change-this',
+  timeout: 30000,
+  reconnectInterval: 5000,
+  maxReconnectAttempts: 3
+};
+
+// Initialize signer client
+const signerClient = new SDKSignerClient(signerConfig);
+
+// Session storage for verified users
+const verifiedSessions = new Map();
+
+// Session management
+class SessionManager {
+  static generateSessionId() {
+    return uuidv4();
+  }
+
+  static createSession(phoneNumber, userData = {}) {
+    const sessionId = this.generateSessionId();
+    const session = {
+      id: sessionId,
+      phoneNumber,
+      userData,
+      createdAt: Date.now(),
+      expiresAt: Date.now() + (1 * 60 * 1000) // 1 minute
+    };
+    
+    verifiedSessions.set(sessionId, session);
+    return sessionId;
+  }
+
+  static getSession(sessionId) {
+    const session = verifiedSessions.get(sessionId);
+    if (!session) return null;
+    
+    if (Date.now() > session.expiresAt) {
+      verifiedSessions.delete(sessionId);
+      return null;
+    }
+    
+    return session;
+  }
+
+  static deleteSession(sessionId) {
+    verifiedSessions.delete(sessionId);
+  }
+
+  static cleanupExpiredSessions() {
+    const now = Date.now();
+    for (const [sessionId, session] of verifiedSessions) {
+      if (now > session.expiresAt) {
+        verifiedSessions.delete(sessionId);
+      }
+    }
+  }
+}
+
+// Middleware to validate session
+const validateSession = (req, res, next) => {
+  const sessionId = req.headers['x-session-id'] || req.body.sessionId;
+  
+  if (!sessionId) {
+    return res.status(401).json({
+      success: false,
+      message: 'Session ID requis'
+    });
+  }
+
+  const session = SessionManager.getSession(sessionId);
+  if (!session) {
+    return res.status(401).json({
+      success: false,
+      message: 'Session invalide ou expirée'
+    });
+  }
+
+  req.session = session;
+  next();
+};
+
+// Cleanup expired sessions every 5 minutes
+setInterval(() => {
+  SessionManager.cleanupExpiredSessions();
+}, 5 * 60 * 1000);
+
+// Connect to signer on startup
+(async () => {
+  try {
+    await signerClient.connect();
+    console.log('Connected to signer service');
+    const serverResponse =  await signerClient.get_owned_processes();
+    console.log('Server response:', serverResponse);
+    
+    for (const data of Object.values(serverResponse.data)) {
+      console.log('Process data:', data);
+    }
+  } catch (error) {
+    console.error('Failed to connect to signer:', error);
+  }
+})();
+
+//------------------------------------ End of Signer Client Integration ------------------------------------
+
+/// client auth endpoint
+/// client sends its pairing process id, we add it to the customer process
+app.post('/api/v1/customer/auth/client-auth', validateSession, async (req, res) => {
+  const { pairingId } = req.body;
+
+  if (!pairingId) {
+    return res.status(400).json({
+      success: false,
+      message: 'Missing pairingId'
+    });
+  }
+
+  try {
+    const result = await signerClient.updateProcess(processId, newData, privateFields || [], roles || null);
+    
+    // Clean up the session after successful update
+    SessionManager.deleteSession(req.session.id);
+    
+    res.json({
+      success: true,
+      message: 'Client authentication successful',
+      data: result
+    });
+  } catch (error) {
+    console.error('Client authentication error:', error);
+    res.status(500).json({
+      success: false,
+      message: 'Error during client authentication',
+      error: error.message
+    });
+  }
+});
+
+app.post('/api/v1/customer/auth/get-phone-number-for-email', validateSession, async (req, res) => {
+  const { email } = req.body;
+
+  if (!email) {
+    return res.status(400).json({
+      success: false,
+      message: 'Missing email'
+    });
+  }
+
+  const phoneNumber = await signerClient.getPhoneNumberForEmail(email);
+
+  if (!phoneNumber) {
+    return res.status(400).json({
+      success: false,
+      message: 'No phone number found for this email'
+    });
+  }
+
+  res.json({
+    success: true,
+    message: 'Phone number retrieved successfully',
+    phoneNumber: phoneNumber
+  });
+});
+
 //------------------------------------ Email Section -----------------------------------------