Hi,
I'm trying to build a login system with a phone authentication system.
Does anyone of you have experience with this? I'm using cloud as a backend, and they have twilio integrated in cloud. So i managed to send sms with a pin but security isnt that high. And my customer has to pay for every message not only successfull attemps.
Nexmo API sounds good to me but didnt manage to include in my app.
Thanks