Interesting. Euclid only works with smartphones, in that it appears to simply sniff MAC addresses, and triangulate them with off-the-shelf wi-fi equipment. I'm

Interesting. Euclid only works with smartphones, in that it appears to simply sniff MAC addresses, and triangulate them with off-the-shelf wi-fi equipment. I'm guessing the mall tracking systems are using something on the GSM and CDMA spectra, and are sniffing UDIDs?