Old phones and tablets could be repurposed as dash mounted cameras like required by law in Russia, the source of all the wonderful crash videos on the web. If I had a couple of old phones I would put one in on my dash and one in my back window and run them anytime the key was in the ignition. 1/4 sec shutter speed and a 20 minute loop would be adequate.
It would also require:
- a transformer or two from 12 v to 4.7v or whatever the old device needs.
- some wiring of 12 volts from panel to mount locations, probably unswitched--current needed for running the camera 24/7 would need to be compared to allowable battery drain.
- mounts.
- some possible heat damage to electronics in the summer sun. I'm not sure what the Russian equipment does to avoid this. Quite likely nothing.
Enjoy.