PhoneFactor is a multi-factor authentication system which utilizes phone calls to verify identity. With multiple out-of-band methods (phone call, text message, and push) and an OAUTH passcode option, PhoneFactor provides flexibility for users and a single multi-factor platform for IT to manage.
On October 4, 2012, it was announced that Microsoft had acquired PhoneFactor. The PhoneFactor service is now available as Azure Multi-Factor Authentication. In addition to securing on-premises applications and identities, the service now also works with cloud applications like Office 365 that use Windows Azure Active Directory.
Background
Founded in 2001, PhoneFactor helps organizations address user demand for a simple sign-in process while also meeting security and compliance standards. By leveraging a device every user already has – a phone – PhoneFactor enables scalable, user-friendly, secure multi-factor authentication.