Perhaps live streaming mics and cams designed to be affixed inside quarters and to one's person. Local relays designed to be hidden to facilitate both buffering

Perhaps live streaming mics and cams designed to be affixed inside quarters and to one's person. Local relays designed to be hidden to facilitate both buffering and redundancy in cases of transmission difficulties due to inclement weather or tampering. The whole thing could be issued as a standard kit for a few thousand dollars. Maybe add some picture booklets for the crew explaining how fucked they are if they try anything, and include a copy of Captain Phillips for good measure. Of course, such a scheme would just increase the need for observers to have their own tamper-proof food and water rations as well. At that point, industrial "accidents" are about the only thing remaining.