Glide brings SIM-based authentication to all major US carriers

Glide.id has launched public beta availability of its MagicalAuth platform across AT&T, T-Mobile and Verizon, making SIM-based cryptographic authentication available nationwide for iOS and Android users in the United States.

The platform authenticates users through their mobile carriers using carrier-issued cryptographic credentials instead of SMS one-time passwords or authenticator apps.

The launch reflects a broader industry shift toward network-based identity signals, where mobile carriers, operating systems and digital wallets increasingly provide trusted authentication instead of passwords and SMS codes.

“SMS OTPs were never designed to withstand AI. They were built for a world where the biggest threat was a forgotten password. That world is gone,” says Eran Haggiag, founder and CEO of Glide.id.

MagicalAuth uses a cryptographic verification tied to the user’s SIM. The system uses credentials associated with the subscriber’s SIM and mobile carrier to confirm possession of the phone number.

Each SIM contains a carrier-issued cryptographic key. During authentication, MagicalAuth sends a mathematical problem that can only be answered using the key associated with the SIM.

“With SIM-anchored protection, enterprises can move from older authentication methods to network-embedded, carrier-authenticated protection,” says Scott Lawrence, chief product officer at Verizon Business.

The platform first creates an authentication session through Glide. The user’s device then obtains a carrier-issued credential.

Glide passes the credential to the carrier for validation, which returns a cryptographically signed result confirming the phone number associated with the SIM.

MagicalAuth can use the Digital Credentials API to request a temporary TS.43 credential issued by the carrier on Android devices.

“Our work with Glide.id and the use of APIs help protect digital identities and financial transactions at scale by embedding security directly into the network,” says Shawn Hakl, SVP of product at AT&T Business.

The U.S. rollout builds on deployments in Germany, the UK and Spain, with Glide planning expansion into Canada and additional markets in 2026 as carriers take a larger role in passwordless authentication.

Article Topics

authentication  |  digital identity  |  Glide  |  passwordless authentication