![]() ![]() To use TOTP two-factor authentication in ProcessWire, you must be running version 3.0.109 or newer, and you must install the TfaTotp module (link below). But if you were to do that, you'd want to do so very securely, as the more copies of that secret that there are, the less secure it is. This app generates one-time tokens on your device which are used in combination with your password. ![]() The app brings together best in class security practices and seamless user experience together. If you are using another application like Google Authenticator, you could always keep your own backup of the QR code/secret, so that you could plug it into any other phone or authentication app and continue to generate codes with it. TOTP Authenticator allows you to quickly and easily protect your accounts by adding 2-factor authentication (2FA). Applications like Authy and LastPass keep that backup for you (cloud-sync). So this could be a problem, unless you've got a backup of your private key. What if your phone dies or gets lost? Since the private key (secret) is stored on your phone, you'd no longer have the ability to generate authentication codes. From that point forward, the website and phone can confirm identity with a 6-digit code that changes every 30 seconds. ![]() When you use your phone and authenticator app to scan a QR code, it is sharing that secret with your phone. TOTP relies upon a long string of characters called a "secret", which is a private key that is stored server-side with the user account when enabling two-factor auth. One of the nice things about TOTP is that all the applications implement the same algorithm (described in RFC 6238), and thus there is likely to be broad compatibility between them.
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