How to find out if a user actually has Glass
问题 I'm writing a fairly complicated application for Glass and I'm worried about users coming in, signing up, and using the resources for my AppEngine account even though they don't have Glass and will get no benefit from it. Is there currently any way in the Mirror API to actually determine if a user has Glass? 回答1: I think a way to verify they have Glass would be an excellent idea. This has been requested on the issues list. In the mean time, you might want to implement "double opt-in". It is