Small helmet or hat mounted cameras have been available to the police in the UK for the last few years. I don't think they're ubiquitous yet, but it seems like

Small helmet or hat mounted cameras have been available to the police in the UK for the last few years. I don't think they're ubiquitous yet, but it seems like only a matter of time before they are. A ubiquitous sousveillance situation seems like the best possible outcome for all concerned, and we seem to be already some way along that trajectory.