Facebook's Account Kit Login System Works Via Phone Numbers, No Passwords Needed (softpedia.com)
An anonymous reader writes: At this year's F8 developer conference, Facebook announced a new tool called Account Kit, which can be used by app developers to support phone number-based login systems. Every time the user wants to login, they have to enter their phone number. Facebook will then send them a verification code via SMS, which they have to enter on the site. The system was already tested live, and Facebook expects it to be widely adopted, allowing sites to offer users accounts that don't require them to memorize a new password. Each developer has a 100,000 free confirmation SMS messages per month quota. Facebook claims to support SMS login operations for over 230 countries and regions, and in 40 different languages.
Everything is being tied back to real identity and it's becoming more and more difficult to publish anything without leaving a trail back to yourself.
Passwords serve a useful purpose. People lose phones all too frequently, and many aren't well-secured. Passwords are a bad authentication mechanism on their own, but they do improve security in two factor authentication. Otherwise, it's possible to do a lot more damage from a lost phone. Knowing a password greatly increases your confidence that the person is who they say they are. I hate the idea of removing either factor in two factor authentication.
That it's possible to intercept SMS, either through the air or from the handset. Feck it, most android apps are spyware/adware with a bunch of permissions it they have no legitimate use for
I imagine that by giving them my number, I'll also be agreeing to have it passed onto "carefully selected partners" who will send me information about products I may be interested in.
Summation 2
great, so someone steals my phone and has automatic access to the logins too.
They don't even have to steal your phone. They could forge or order a duplicate SIM card, or install malware on your phone. You wouldn't know that someone is using your login.
If you have someones cell phone you already have access to most things anyway. Most services (including email) on mobile devices leave the user logged in or for convenience by saving their credentials locally.