4 ms·wow, i'm out of the loop. what is everyone building with these types of APIs?by thefastlane 10y agowow, i'm out of the loop. what is everyone building with these types of APIs?martin_a 10y agoTwo factor authentication and notifications of any type would be the two things that come up in my mind first.nexxer 10y agoMore: allowing contact from offline users (newspapers, tv, radio) and interacting with them, mobile payments.