The document describes a proposed solution called PetScan that uses electronic pet collars with barcodes. Scanning the barcode with a smartphone provides access to the pet's medical history, vaccinations, allergies, and other important details. The collars would be sold at animal shelters, pet stores, and clinics. Owners would pay a small fee for the collar and a monthly subscription fee. This would provide rescue organizations with ongoing funding. Scanning a lost pet's collar would quickly connect the pet with its owner.