Microchipping without current registration is ineffective. Keeping registration information current is the critical welfare responsibility that many microchipped animal owners neglect.
Microchip welfare depends almost entirely on registration data accuracy. An unregistered or incorrectly registered microchip provides no more welfare benefit than no chip at all when reuniting lost animals with their owners. The welfare investment of microchipping is wasted without consistent registration maintenance. Every move, phone number change, or ownership transfer requires immediate registration update to maintain the welfare benefit.