At one time, it was quite common for drug traffickers as well as ordinary citizens to try to fly from point A to point B with drugs on their person, or in their luggage. Nowadays, it can be quite difficult to take drugs on airplane without getting caught. Even those who are using medical marijuana run the risk of getting arrested, even though they may well have the prescription for the marijuana on their person. X-ray machines in airport security are able to detect drugs that may be in a carry-on bag. If you attempt to hide drugs in your shoe, remember that they must be removed to pass through the line, and they will be x-rayed as well. Generally, it is not a good idea to take drugs on airplane. You face a world of trouble if you should get caught trying to smuggle drugs to your destination. Even prescription drugs are subject to searches. If you take narcotic pain medication or tranquilizers, for example, make sure they are in their original prescription bottles with your name on them. Otherwise, you could be questioned, detained long enough to miss your connecting flight, or even arrested.