In addition, Navizon also has the ability to assign real identifying information to a device, but it's a process that could hardly occur without your knowl

In addition, Navizon also has the ability to assign real identifying information to a device, but it's a process that could hardly occur without your knowledge. When the user buys something, you have their name and credit card information and maybe an existing member/discount card. Connect to whatever dot is closest to the cash register. Maybe make it more of a Bayes weighted connection instead of a certain connection to handle edge cases like "spouse using other spouse's card", "member-card swap club", etc Easy, effective, and transparent to you, the person being tracked. You're just buying something right? You can track people in meatspace using cell phones the way you track them online using browser cookies. This just makes it affordable (especially compared to the cost of tracking via cell tower)