CypherKey play online

This simple application can be used to authenticate with participating CypherKey sites and achieves genuinely strong Two-Factor Authentication (2FA) as an alternative to passwords, SMS of One-Time PINs (OTPs) or tokens.

CypherKey allows users to:

- register their phone or tablet to prove the presence of something they have, and
- mentally scramble their self-selected PIN so its never revealed or entered when proving the PIN is something they know.

Since the users PIN is never revealed, the same PIN and phone can be used safely for multiple participating sites and accounts for optimal convenience while avoiding the risks of password re-use or similarity.