In this talk, Amanda Cavallaro will demonstrate how to use the Vonage APIs for SIM swap detection and verification through SMS alongside Firebase services for hosting, database, and storing the logic. The demo application includes a simple bank dashboard and a login form. If the SIM Swap API detects that a phone number was swapped recently, the verification code will not be sent, and additional security measures will be applied. A verification code will be sent via the Verify v2 API to authenticate the user if no recent swap is detected.

About Amanda: Amanda Cavallaro is an Italo-Brazilian developer advocate @ Vonage. She is a Google Developers Expert for the Firebase and ML Cloud Conversational AI categories, passionate about cloud technologies, JavaScript, human-computer interactions, and ambient computing, and loves learning. You can speak to her in Portuguese, English, Italian, and a little Japanese.

In this talk, Amanda will demonstrate using Firebase Cloud Functions to handle backend logic, Firestore to store user data and verification requests, Firebase Emulators to test, and Firebase Hosting to serve the web application.

She will use APIs for SIM swap detection and verification through SMS. The demo application includes a simple bank dashboard and a login form. If it is detected that a phone number was swapped recently, the verification code will not be sent, and additional security measures will be applied. A verification code will be sent to authenticate the user if no recent swap is detected.

The talk will cover modern methods such as passkeys, TOTP, and biometrics, along with more advanced patterns like offline authentication for mobile apps. Attendees will learn how to implement these strategies leveraging React Native primitives while understanding the security trade-offs and best practices.