1 Google Accounts. Haven't regarded yet, TBH. A Google Account integration is a simple and related MVP to your product.
PS excited to attempt the product. Unfortunately, though it seems trivial, it is definitely not tremendous easy to do. http://iq2debates.nyc/__media__/js/netsoltrademark.php?d=xn--l3Ckrwb7aq9dxa8gh9e.com