alt Hacker NewsThe title is misleading: the chip isn't useless, it is basically NFC and can be read just fine. The number on it can be looked up in a registry to notify the owner of a lost pet. I believe there is nothing preventing you from registering the same number with multiple registries. Hope that helps.
> I believe there is nothing preventing you from registering the same number with multiple registries
Most cities require you to register your pet and get a license. Part of that process is to share the microchip number, vaccine records, vet info etc. Our local animal shelter usually checks with the city if a microchip is found but no ownership is established.