Here's my unbelievably cool idea, that I have yet to license as my own. I tell you about it cause I am an inventor kinda guy, and I have tons and tons of ideas of stuff every day, and this is just one of them.
One of the ones with the best market-value though, so if some of you do decide to go forth with it...cut me in for like 10% of what you earn, please.
--- The Perfect Registrations Plate ---
Ok, one of the biggest problems for the police these days is being understaffed with too much to do. To help the police of the world, my idea is a new registrations plate for cars.
Its a known fact that the scene for the most crimes every day happen on the roads, and catching the perpetrators aint usually easy at all, esp when you dont have the resources to deal with it.
In the modern age, its about time we modernize in an area where it should have been done loong ago.
The Idea :
I dunno if any of you have seen these commercial-screens hanging everywhere..digital photoframes, so to speak. Well the new registration-plate is highly based on one of these.
In this electronical device, there is a safety-lock that can overload the battery and shut down the car, there is a motion-tracker that will work with Police GPS system, to screen every cars behaviour, also there is a radio-transmitting unit, and a radio receiving unit, that controls what the plate shows.
The Police controls the mainframe that deals out the registration-plates.
When someone drives too fast : Police mainframe automaticly makes the registration shut down the battery to stop the car, and then posts "SPEEDING" on the plate. Car will not be starting again, until the Police has stopped by and given the appropriate fine.
When someone dont pay the annual registrations fee : Police mainframe automaticly makes the registration shut down the battery to stop the car, and then posts "LACK OF PAYMENT" on the plate. Car will not be starting again, until the Police has registered the fee being paid.
Speeding and cutting peoples plates off of cars are things the Police nowadays waste time doing, time that could be spent chasing down murders and rapists.
Also this idea can be combined with other newly made ideas for cars : IE the alcohole-check some cars are using before letting you start the car.
If a crime is committed, it can be very quickly localised, and if the perpetrators are driving, the police can simply "shut them down" stopping the car with immediate effect.
If a car is reported stolen, Police localises the car quickly, and shuts it down.
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The idea in itself holds an amazing possibility of value, not only to you as the salesman, but also to the community, as it gives the Police less things to do, and it gives the every-day man safer roads.
Also if made a necessity in any of the European/American countries, it would quickly spread out as a necessity to the entire western world, and the to China, Japan, India, Pakistan etc etc etc.
And what makes it an incredibly easily marketable device :
Everyone would need one to be allowed to drive a car.
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Now that you've read the entire idea, I bet you're quite enthusiastic. Or maybe not.
I'd love comments to this idea though. And if anyone is interested, I can write a more in-depht description on how to make it all work, the techie parts 
Cheers !
- Damon -
~^~^~^~^~ This is my world now ~^~^~^~^~
~^~ Lemming of Prostitutes and Insanity ~^~