Very nice, just keep Glass in the privacy of your home away from the non-consenting public. Thanks.
We're already working on the next demo, but the one after that (let's say 2 weeks) I'll try to show what we can do in terms of protecting the public's privacy (incidental bystanders). Thanks for mentioning this.
Devices like Glass seem to be the threshold where this always on activity becomes most apparent as a potential problem. No doubt we'll be seeing more in the future, Motorola's recent always-on-ness hardware for example.