Global 2-Factor Authentication with SMS and Voice

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Our 2-Factor Authentication secures your application, confidential user data and your business

It relies on a mobile phone to receive an additional log in credential – a one-time password or PIN number (OTP) delivered via SMS or Voice.

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Your complete solution for user security

PIN Generation

Our platform provides the back-end logic needed for PIN generation (OTP) so you don’t have to. Each code is tied to an individual user and can only be used once.

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Number Lookup

Save money and increase conversion rates with our number validation. We're able to catch invalid numbers as they're entered, making sure your message is headed to a valid number.

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Voice Failover

Voice-based 2FA adds text-to-speech capability to the standard 2FA process, enabling you to place calls and deliver user authentication PINs via voice audio. By adding Voice failover message delivery rates can be pushed close to 100 percent.

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How Infobip 2FA works

Step 01

User downloads an app.

Step 02

User enters cell phone number.

Step 03

Number Lookup checks number validity. Infobip alerts app maker if number is invalid.

Step 04

App maker alerts user the number entered is invalid, and prompts the user to re-enter number.

Step 05

Number is validated and a PIN is sent to the correct number. With Infobip 2FA the PIN can be sent via SMS or Voice.

Step 06

User enters the PIN to complete app activation.

Get the brochure for more details:

rostelekom logo

We would like to thank Infobip for enabling delivery of one-time pins via SMS during FIFA 2018 World Cup. Services were provided on a high level, Infobip ensured authorization on WiFi networks in 8 host cities for visitors from 40 countries around the world. We recommend Infobip as a reliable provider for 2FA service.

Sergey Polyakov, Director, Krasnodar branch of PJSC, Rostelecom

Global 2FA capabilities powered by our platform

Global Delivery

Deliver your authentication PINs to users regardless of their location. With Infobip’s global coverage spanning 800 networks and 190 countries, you can deliver your one-time PINs with best delivery rates and speed available on the market.


SMPP/HTTP REST APIs allow you to create a custom-made 2FA solution in the programming language of your choice.

View our documentation