I had the same question a several weeks ago because I wanted to get my baby chipped at the time of his neutering and his vet said they use Crystal Tag. I asked YT'ers and no one heard of this chip. It seems that AVID and Home Again are the most popular in the states. I have read that most scanners (80%) in the US only read chips at 125khz frequency (FDX-A). I believe Crystal Tag is FDX-B which operates at 134.2khz and it appeared that it can be read outside of the US but I couldn't figure out how effective it would be here so I decided not to do it. I decided to find a vet who micro-chips with either AVID or Home Again. |