I really dislike the asymmetry between the ability to take pictures of anyone in public easily (assuming spectacles or an equivalent comes out), with low chance of detection (unlike cameras/phones, which are harder to disguise) while being unable to as easily wear a mask in public to preserve some semblance of anonymity. Anti-mask laws exist for a variety of reasons, some of which I am fine with (e.g near banks) and some of which I am not (e.g abuse to shut down things like the Occupy movement). I would like to see a similar treatment of devices like this (spectacles, google glass, or whatever other product people work on in this space).
They should be treated on par with hidden cameras and the like. Until legislation takes care of this, I am not happy with the situation.