RetailNext, Euclid, Brickstream, Nomi, WirelessWerx, Mexia Interactive, andShopperTrak are just a handful of services that provide brick-and-mortar stores with analytics akin to website traffic reports. By tracking movement within stores, they help retailers better understand how to optimize their layouts, staff their registers, attract returning customers, and more. Some extract turnstile-type traffic data from video feeds. Others, like Euclid, rely on devices’ unique mobile Wi-Fi addresses...