The easiest way to add Two-Factor Authentication to any website or app.
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Why people like Authy
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We make the best rated Two-Factor Authentication smartphone app for consumers, a Rest API for developers and a strong authentication platform for the enterprise.

Authy's Features
  • Very secure- We take security seriously. We use industry standard secure algorithms (HMAC RFC 4426) and 256 bits keys which are always encrypted at rest.
  • Fully redundant- The Authy API is deployed accross different PCI level 1 data-centers and it's fully redundant. We also use a DNS provider with anycast support. We've had 100% availability since 2011.
  • Great user experience- You connect to Authy using a transparent REST API which allows you to customize the experience you want for your users.
  • Fully mobile- We support any cellphone. We provide apps for all major phones (iPhone and Android) as well as text-messages for other cellphones.
  • No expensive &
  • complex setups- Hardware dongles, servers, software licenses, setup costs...It's 2013, forget all that. Authy is bringing two-factor authentication to the present.