The term PET IDENTIFICATION AID can be summarized as a device used to identify pets. One such device is a microchip, which is a 9-letter solution to the crossword. A microchip is a small electronic device that is implanted under the skin of a pet. It contains a unique identification number that can be read by a scanner and used to identify the pet. This technology has become increasingly popular in recent years as a way to quickly and easily identify lost or stolen pets.