I just saw this on Groupon today. Apparently, this tag puts a QR code on your pet. When scanned with a GPS enabled phone, it records the position. It’s not exactly “find my pet” but more “find the person who’s found my pet”. An interesting concept….
It does perhaps fall short of the more serious GPS your pet concepts which let you actively track your pet but then again, this solution requires no batteries and is only a lightweight tag. It does put the onus on us humans to see the QR code, know what it is, and scan it (oh and find the dog first) but still, better than nothing for sure.