Here is you valid use case for Google Glass. Make every officer be required to wear it at all times. All arrests recorded from initial contact to Miranda. Traffic stops are recorded from the minute they get out of their car to the minute they get back in. All video footage is uploaded to the cloud and stored on third party servers. When a person is issued a citation or is arrested, The DA and they are provided a copy of or at least access to the video. No video available = no valid citation or arrest. It also eliminates the excuse of "Well, things look different when you are in the field" as you will see things exactly as they looked form the officer's own eyes. Failure to use the camera = suspension on first offense, termination on second. Simple enough.