Years ago, when you wanted to go on vacation, there was only one option. You had to hoof it down to your local travel agency and browse through some travel brochures. Then, when you made your selection, you'd sit across the desk from your travel agent (in a very uncomfortable chair) while they entered all the information on their green monochrome computer screen. Travel agents were the keepers of all travel information. Their life was the stuff of dreams. We imagined they had been everywhere and knew everything about world travel. They were the rock stars of the retail world.
This article shows an explanation of people with metal placed in them because of surgery. The alarm will go off with the several types of metals, although there is no type of card or identification that will help you pass through TSA easily because it is easy to create one of the cards by hand. If the detector goes off, you will have to be searched regardless.
