If we had the technology to implant tamper-proof devices in people that recorded location, audio and video, and some basic bio data, but that data could only be

If we had the technology to implant tamper-proof devices in people that recorded location, audio and video, and some basic bio data, but that data could only be be made available to law enforcement under specific circumstances, would you really see a problem with making that mandatory for everybody? It would be a great tool for crime solving. Almost all violent crimes and property crimes could be immediately solved by data mining when and where a person was killed or injured or property was damaged or stolen, who else was around. Why would it be a different story?