Google Glass sees all -- and that raises privacy concerns

"That in-your-face quality of Glass could wake up more people to their ever shrinking privacy in the rapidly advancing digital age, University of Washington law professor Ryan Calo said.

Not only will people be more keenly aware that they have no reasonable expectation of privacy in public, Glass and devices like it could make it easier for government authorities to gain access to everything they see and record without a warrant, he said."