Home Again Pet Recovery System
Encyclopedia
Home Again Pet Recovery System, manufactured by Schering-Plough
Schering-Plough
Schering-Plough Corporation was a United States-based pharmaceutical company. It was founded in 1851 by Ernst Christian Friedrich Schering as Schering AG in Germany. In 1971, the Schering Corporation merged with Plough to form Schering-Plough. On November 4, 2009 Merck & Co...

, is one of the two main electronic pet tagging systems used in the US (the other being AVID
AVID
AVID stands for:* Advancement Via Individual Determination, a college-readiness system designed to increase the number of students who enroll in four-year colleges in the U.S....

). Much of the rest of the world uses similar chips based on ISO 11784 and ISO 11785, instead.

A 125 kHz RFID transceiver
Transceiver
A transceiver is a device comprising both a transmitter and a receiver which are combined and share common circuitry or a single housing. When no circuitry is common between transmit and receive functions, the device is a transmitter-receiver. The term originated in the early 1920s...

 with a unique identification code is implanted between the shoulder blades of the cat or dog. For other species the chip may be placed elsewhere, for example between the breastbone and the breast muscle in birds. As with similar pet identification systems, a code is stored in the implanted chip that can be looked up in the HomeAgain database to determine the contact information of the pet's owner.

Criticism

See Cross compatibility of animal microchip tags
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