a. Was not painful to the animal.
b. Visible only to an RFID reader.
c. Unique number for every tag and every animal, so no duplication, error of confusion.
d. Easily maintain electronic records of vaccination and medication, health checkups.
e. Provides audit trail traceability for food safety in case of cattle.
f. In case of pets, provides a fool proof identification system in case the pet is lost or stolen.