Comment by anorborg

I played with SMS, SMS reply, and MMS. All worked well and as expected (I used a Google-Voice account for testing). Probably one of the easiest out-of-band login solutions I've used. For SMS a "link-or-reply" feature would be nice. Depending on the particular use-case it might be easier for me to press a link in the message versus typing something. Also perhaps eventually an app (swiping notification is enough to complete login)