A very big Walled Garden. As an owner of an ecommerce site, I can tell you it's very tempting to create an App version just to take advantage of one-tap thumbpr

A very big Walled Garden. As an owner of an ecommerce site, I can tell you it's very tempting to create an App version just to take advantage of one-tap thumbprint orders. Also I don't think Amazon or Google have a TouchID payment system.