Microchipping is a permanent pet identification method in which a small microchip, about the size of a grain of rice, is placed between the shoulder blades of your pet. It is not a tracking device. The microchip number is recorded in a nationwide database that is available 24 hours per day, 7 days per week. If your pet becomes lost, shelters and veterinary hospitals nationwide have scanners that read the microchip and return the animal to its rightful owner.