can be bought individually for around for integration into custom hardware. Animal and Bio-Compatible Microchips
: Hobbyist sites like Adafruit or SparkFun (often found via Google Search) are better for individual chips or development kits for Arduino/Raspberry Pi projects. buy rfid chip
: Amazon and eBay are reliable for small packs of cards, key fobs, or adhesive tags for home use. can be bought individually for around for integration
: For specific needs like pigeon racing, specialized RFID chip rings are available for tracking individual birds during flight. Specialized Consumer and Niche Applications buy rfid chip