Verify API by Telnyx

What it does

Telnyx's Verify API makes it easy to add multichannel user authentication to your software via a single API. Automatically generate and authenticate codes via SMS, Voice Call, Flash Call, or WhatsApp when requested by your users at login.

2FA API via SMS, WhatsApp, Voice, Flash Call and PSD2. Get started today with the most channel-rich 2FA API.

Create your own authentication program or build one into your existing product. Use a single phone verification API to reach users across all devices with OTP and more. Telnyx’s Verify API offers all the standard features of user authentication software, including OTP sent via SMS and voice as well as flash calling. It's super easy to use and, just like the rest of our platform, comes at a great price. The Telnyx Verify API allows you to build your own authentication program using one easy API for SMS, voice and even flash calling. Reliable infrastructure for scalable 2FA delivery to your users in over 190 country codes. Client based DLRs give detailed insight into how customers interact…from telnyx.com

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