It is an interesting idea...it preserves every encounter as evidence, one way or the other. Issues that come to mind:
- The system would need some protection to prevent deletion of bad LEO behavior, for obvious reasonsyou're orsystem would also need to have some way of protecting the officer's privacy during bathroom breaks, etc.
- There is also the concern about the privacy of anyone the officer encounters through the day. Don't want every encounter, especially non-evidentiary encounters (like asking a kid walking home how school is going, or asking a mother how her son is doing b in rehab, etc). FOIA/public records requests would put a lot of this out in b the public eye.
- There are some police encounters that need to be out of the public eye...like a conversation between an officer and someone willing to share information, but not wanting their name or identity know...you know, the man you are chasing ran that way, etc.
One last concern isn't just about this, but the evidentiary value of digital recordings or photos in general. As the software and technology keeps getting better, images can be altered more easily. Incriminating photos can be generated , videos can be altered. It's a growing concern in the court system, for which there is no easy answer I know of.