Mobile Number Verification by SMS

Confirm a number during signup or booking

When a phone number is central to an account or booking, a verification code can help confirm the user can receive texts at that number. Explain why the code is being sent and how long the recipient can use it.

Codes and retry limits

A verification flow typically creates a short-lived code, sends it by SMS and checks the value entered before continuing. Limit retries and protect the verification process. Avoid displaying whether a number belongs to another account when a verification attempt fails.

Design a clear verification step

Our team can scope the website or application integration and the user journey for your particular system. Plan for delayed delivery, expired codes and a support route for people who cannot receive SMS.