New API Lets App Developers Authenticate Users via SIM Cards

Online account creation poses a challenge for engineers and system architects: if you put up too many barriers, you risk turning away genuine users. Make it too easy, and you risk fraud or fake accounts.
The Problem with Identity Verification 
The traditional model of online identity – username/email and password – has long outlived its usefulness. This is how multi-factor or two-factor

Source:: The Hackers News