As someone with experience in this area I always find these proposals to add IREDs to block identification hilarious. First, almost every security camera on th

As someone with experience in this area I always find these proposals to add IREDs to block identification hilarious. First, almost every security camera on the market these days has a IR cut filter switcher which means these aren't going to be affective against cameras in the daytime as the IR light is filtered out. Second, there are other methods of identifying people using cameras if facial recognition fails. You can identify people by their gait, or by their clothing, track them back to their car and get their license plate, etc.