The Purina Smart ID Tag is designed to enhance pet safety by storing important details which can be accessed by scanning a QR code. Residents of the United States can obtain this tag for free by following specific steps on the Purina offer page, which include providing necessary details and submitting a request. Once received, the tag can be activated and the pet's information uploaded, ensuring they can be quickly identified if lost. 

 Purina is offering a free Smart ID Tag through a cash-back promotion available to residents of the United States. The tag features a QR code that stores vital information about the pet, accessible via any smartphone.