I have a website that provides a specific SW service.
I would like to allow users to subscribe to this SW service:
Sign-Up: the user provides credit card details, a username and a password.
Sign-In: the user enters username+password in order to get access to my SW service.
The user's credit card should be charged once per month (i.e., recurring payment).
I'm considering Google Wallet for this purpose, but there are a couple of issues that I'm concerned about:
Can I use the Google Wallet API in order to implement sign-up and sign-in, or should I implement user-authentication separately within my server?
Is the Google Wallet API available only for mobile devices? This is implied in both Google Wallet's website and in Wikipedia. My website is primarily intended for use through desktop PCs, and not through smartphones.
Thank you for your help!