I got this idea the last time I attended a Renassaisance Festival and witnessed many people doing thing which were really inconsiderate, even unsafe to others.

The solution I think is to have all passengers charged (or at least sign something contractual authorizing a charge) for what is essentially a deposit when paying for the flight. Passengers recorded breaking the rules during the flight and reasonably identified cannot collect their deposit (or are charged) after the flight. It is sort of like "red light cameras" but instead of being considered a fine, they'd be required to advance the funds.

I'm thinking that passengers with a good record would not be precharged vs signature, and bad record passengers would be required to pay in advance, or even pay out a larger deposit.

The base figure I'm thinking of is $40. High enough that all but the most wealthy will resent it, and low enough to stay out of court over.

I like this idea for a number of reasons, including that at least in theory it ought to reduce the cost of air travel if only because things might run more smoothly as a result. If it does, it sort of "Socialises" air faire's a bit.

It also occurs to me that the fines collected might soon after it is started pay the cost of all the security cameras which would need to be operated to record much of this (assuming the planes don't already have them) and equipment to record the video. Finally I'm thinking that though it is unlikely this recorder would be built to necessarily withstand an air disaster, were some forethought put into this system, it could at least be of assistance in monitoring suspicious behavior on the planes if a problem did arise.