diff --git a/src/services/credentials/webauthn.service.ts b/src/services/credentials/webauthn.service.ts
index e6a3de0..6899f86 100644
--- a/src/services/credentials/webauthn.service.ts
+++ b/src/services/credentials/webauthn.service.ts
@@ -200,8 +200,14 @@ export class WebAuthnService {
       console.log('🔐 WebAuthn credential created successfully:', credential);
 
       const response = credential.response as AuthenticatorAttestationResponse;
+      const credentialId = Array.from(new Uint8Array(credential.rawId)).map(b => b.toString(16).padStart(2, '0')).join('');
+      
+      // TEST: Store credentialId in sessionStorage for testing
+      console.log('🔐 TEST: Storing credentialId in sessionStorage:', credentialId);
+      sessionStorage.setItem('webauthn_credential_id', credentialId);
+      
       return {
-        id: Array.from(new Uint8Array(credential.rawId)).map(b => b.toString(16).padStart(2, '0')).join(''),
+        id: credentialId,
         publicKey: Array.from(new Uint8Array(response.getPublicKey()!))
       };
     } catch (error) {