To use Microsoft Authenticator with a non-Microsoft site or app, you'll need to have the QR code handy from the site or app in question so that you can scan it within the Authenticator app.

Update: Apple has now removed most scam authenticator apps from the App Store – see end of piece. Twitter’s latest bonehead move has led to a flurry of scam authenticator apps, with at least ...

A number of attendees opened Microsoft Authenticator, scanned the QR code, and proceeded to overwrite another application’s TOTP (Time-based One-Time Password) key,” Randall wrote.

Microsoft on Tuesday ... new accounts to its authenticator application. By limiting the number of fields Authenticator considered when adding accounts via QR codes, some users that identified ...