The first I can think of is a a brain-washing machine that only works to erase the concept of all sorts of raisesem, greed, aggressiveness and killing no matter what religion or political-function they follow !! And we would call it the humanitarian machine.
I know I'm such a dreamer but oh well sometimes we should dream to sweeten up the bitter reality we are living in. Anyway back to the machine. This machine would need a LARGE capacity, the largest capacity mankind have ever invented. And we would need more then a dozen thousand of this machine to accomplish this job. Plus when this machine washes of their brains the hard ware of it has to be destroyed emediatly. Which requires having a lot of hardware disks or chips!
Second, A machine that detects the existence of drugs from a long distance. Since drugs is a HUGE & DANGEROUS case we are facing today, unfortunately!! The one i have in mind is much of as a robot.. Where it detects the drugs works on shutting down the transportation tool these defected people are using and also working as a human and by that I mean it directly contacts the authorities of the country the drug dealer came from and demands a direct arrest, as soon as he/she return back to their country.. Meanwhile this robot works on the drug dealers papers to send him back to his/her country
