Forbes offers a rundown of Abraham’s history and how the tech works: Peter Thiel, known for his thin-skinned anti-Gawker campaigning, led the startup’s recent $30M series B round of funding. Given wifi’s increasing dominance throughout the world, the Zenreach approach to measuring customers appears fairly foolproof. Of course, the increasing measurement of data on individuals’ movements will worry anyone concerned about a stifling lack of privacy in the digital age. Because stores know the average spend of a shopper per visit, they can then easily figure out how much they’re making off a customer. Zenreach also offers marketing templates and creates customer segments to make it easy to set a trigger such as an automated email to go out to each one-time frequent shopper who doesn’t visit for 90 days.”