SixToken uses crypto-challenge with push notifications to validate custom transactions replacing hardware tokens and SMS. Simple, secure and scalable. Integrate SixToken to any web and cloud app or access to desktop. It provides the most secure and seamless login experience scaling to any number of users. Your key never leaves your device. Avoid any risk of compromising your key. With SixToken the authentication private key never leaves your phone and is protected with the highest security standards such as biometrics and Hardware token.