Online Sign-in Authenticators

[kasugie]

SMS-OTP messages from most US financial institutions will not reach a Telcel phone. I've needed to maintain a US cell phone here for this purpose alone. I don't know what the experience has been for AT&T Mexico (formerly iUSACell and Nextel) users.

A lot of US financial institutions are thinking of moving away from SMS-OTP for cost and security reasons. But there probably won't be a single standard for 2-factor authentication. PC Magazine just ran a fairly informative article on this.

https://www.pcmag.com/how-to/multi-facto...-set-it-up

It's probably best to keep checking the web sites of your financial institutions to see what 2fa options are available now, and also what's in the pipeline.