Copper

Still waiting for the verification number. Location: India, Chrome: 51.0.2704.84 Great product though.

With the recents news about SS7 related vulnerabilities, do you think it's a good idea to put trust in SMS for signup? See http://news.softpedia.com/news/s... for a quick article about SS7 vulnerability

Wait, how is it different from Twitter Digits?!!!

I'm always excited by attempts to move beyond passwords. In looking at the FAQ, I think you will need to support the transferring from past phone number to a new one sooner than later: "I got a new mobile number. How do I transfer my old account to my new number? We don’t currently have an ability to transfer accounts. There are some thorny security issues to work through. We think about it from time to time so watch this space."

I like this a lot. This takes the pain of facebook verification out of it.. Reminds me of 2 step auth.

is this US only? I tried a non-US number and it didn't work

I look forward to trying this out! I was just saying to myself, we need a better way to signup users and loggin them into applications, then boom..product hunt to e rescue.😀👍 Have anyone integrated this with a rails app? Good luck and I hope this is a successful project!