That's more convenient than unlocking my phone to get the code when I miss the brief notification. My plan though, is to port my PIN grid proof of concept to the band.

https://www.wittenburg.co.uk/Entry.aspx?id=69e92695-f6eb-42e...

Going to have to give UI some serious thought, but looking forward to making it happen.

Some 2fa implementations need you to use an app to generate a token code rather than texting you a code.

SMS is not a very secure channel for that second factor. Better than nothing, but cellular has all kinds of security problems.