4 ms·

It's used to store and retrieve your 2fa secrets in case you lose your device

• Terretta 2y ago
  > > Even worse... Sounds like phone number is irrelevant, yet they collect it. > It's used to store and retrieve your 2fa secrets in case you lose your device The phone number doesn't store anything? But if somehow knowing that phone number is a key to getting your 2FA secrets, you'd have a bigger problem. Except it often is, and that's the problem.
  • ezekg 2y ago
    Do what I do and turn off "allow multi-device." Problem solved -- even if your phone number is stolen, they can't recover your 2FA because it's locked to the device too.
    • FabHK 2y ago
      You can enable multi device, and have it on multiple devices, then disable it. https://authy.com/blog/understanding-authys-multi-device-feature/ https://authy.com/blog/understanding-authys-multi-device-fea...
      • ezekg 2y ago
        Yep. I've done this. Lots of people I know use "burner" phones without cellular for 2FA.