Balancing security and user experience with the Number Verification API

In a world where every second matters and digital security has become an absolute imperative, companies face a dual challenge: ensuring ultra-simple user experiences while maintaining a high level of trust.

Mobile numbers have become universal identifiers, known to all and secured by mobile operators’ SIM cards. What if we could use this reality to authenticate our customers without exposing their personal data or disrupting the user experience?

This is exactly what the Number Verification API, offered by Orange and the world’s leading mobile operators, allows us to do automatic, background verification of the mobile line used by the customer. It is silent, robust in terms of security, and completely privacy-friendly.

An imperceptible user experience… yet decisive

The Number Verification API is a concrete response to the challenges of sensitive journeys, where trust is paramount, but where each additional step can detract from the experience. Account creation, reconnection, transaction validation, access recovery: these key moments require rigorous verification of digital identity.

But in a mobile environment, every friction point signifies. A delayed one-time code, an incorrect entry, a misinterpreted message… and the user gives up. This is where Number Verification reveals its full potential: it enables silent, background verification of the number associated with the device.

No action is required on the part of the user. The API queries the mobile network to discreetly confirm that the device being used corresponds to the number provided. This simple mechanism prevents errors, reduces the risk of fraud, and guarantees a high level of reliability.

For product and security teams, it is a valuable tool: it combines a smooth experience with robust verification, without exposing sensitive data or complicating the interface. For the user, it is security that is invisible, but which changes everything.

The Number Verification API offers multiple use cases

Global interoperability, thanks to the CAMARA standard

The power of Number Verification lies not only in its technical efficiency, but also in its interoperability. Thanks to the CAMARA standard, developed by major telecom operators under the auspices of the GSMA Open Gateway Initiative, this API follows a logic of unification and scalability.

In short, a single technical integration provides access to this service on multiple operator networks in several countries, with a common security, governance, and documentation model.

Already available from most major mobile operators, the Number Verification API is set to become more widespread in the coming months and years. Leading analysts estimate that in France in 2026, this API will be the subject of nearly 50 million requests across all applications” (source: Analysis Mason).

In summary, the Number Verification API offers a seamless, secure, and scalable solution that enhances user trust without adding complexity. By embedding native authentication within telecom networks, it balances security and simplicity, meeting the evolving demands of the digital ecosystem.