A woman with long, dark hair stands outside at night, illuminated by vibrant neon lights. She wears a green sweater and black coat, looking down to number verify on her smartphone. The blurred urban background features string lights and trees.

Number Verify

Number Verify provides strong authentication with a superior user experience

SIM-based authentication

Number Verify provides strong sim-based authentication with a superior user experience using the SIM card in every mobile phone. It provides secure, reliable, and seamless SIM-based verification, removing unnecessary steps to access services. Since it’s built on one of the world’s most widely used and universally owned technologies, it’s readily accessible to almost everyone.

Number Verify features

A red square with a white lowercase letter "j" in the center. The letter "j", featuring a dot and a semi-circular descender, forms a stylized and bold graphic element designed to number verify authentication processes.

Cryptographically secure

SIM-based cryptography bound to the mobile number

A blank white square to help verify numbers.

Superior user experience

Fast authentication, invisible to the user

A completely blank white image. No objects, colors, or features are visible, making it impossible to verify any number.

Phishing resistant

No account takeovers caused to phished credentials

A red smartphone icon with a white border. The icon is in a vertical, rectangular shape and depicts a simple outline of a smartphone. The screen area, used for number verify, is represented by a transparent portion within the red outline.

Device-based possession factor

Mobile device as a strong and secure possession factor

Simple integration via API

Build and integrate at speed

A blank white image with no discernible objects, text, or features visible, almost as if it's asking you to verify its emptiness.

Global coverage

Over 3 billion mobile users enabled

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Other companies may also offer this service. If you notice any error or omission, or for more information please contact us at identity@gsma.com