That is a technical solution to a problem that has a far cheaper, and less easily abused solution: don't put up cameras at all.
Building a system with "safeguards" in place that require constant oversight is destined for either regulatory capture of the oversight, or slow dismantling of the oversight.
Building a system with "safeguards" in place that require constant oversight is destined for either regulatory capture of the oversight, or slow dismantling of the oversight.
E.g. warrants -> fisa court warrants -> Xkeyscore