"Thanks to a source close to the Glass project, though, we're excited to give you some insight into what magic actually happens inside that wearable eyepiece, what that UI looks like, and how the innovative functionality will work, both locally and in the cloud." Lots of interesting details. The key to Glass? Developers have to use Google's server-side Mirror API, so everything goes through Google's servers. This keeps local processing needs to a minimum, keeps everything tightly controlled, and, of course, gives data to Google.