To be clear, I’m not asking you to do the research for me. I had the idea earlier today and figured if anyone in my circle had already tried this, they were likely on here. I appreciate the links so far, but I don’t expect you to be scouring the net for me 
I’ll def be back with more specific tech questions later.
The chips in my cats are Eidap 15-digit “ISO microchips” according to the vet paperwork.