It’s asking for the tracker number on the app. It’s not a tracker it’s a chip

At this time, we do not have a mobile app for public use for microchip registrations.

The PetLinkGPS for Dogs app is only for use with the PetLinkGPS device.

The PetLink Pro app available for download on Apple or Android devices is for US Animal Professionals (ACOs and Shelter staff) ONLY to use in the field. When approved Animal Professionals find a lost pet, they can use PetLink Pro on their phones to look up owner details via the pet's microchip number and submit a found pet report to PetLink.