The HOTP token is an event based token. You can paste a secret key or have the server generate the secret and scan the QR code with a smartphone app like the Google Authenticator turning your smartphone into an authentication device.

Get the Authenticator App for Android.

Get the Authenticator App for iOS.

Get the Authenticator App.

Token data

The server will create the OTP key and a QR Code will be displayed to you to be scanned.

The Google Authenticator only supports an OTP length of 6.

The Google Authenticator only supports the SHA1 algorithm.