It isn't clearwhythe iPhone is trackingthisdata, although the possibilities for location-basedfeatures are endless - location-basedadvertising, geofencingapps, and so on.
Besides saving some plastic, the Passbook entry adds some worth through geofencing that reminds recipients to splurge if they're near one of Apple's steel-and-glass stores.
Now consider the myriad digital tech options we have at our fingertips: geofencing, social integration, digital coupons, crowdsourcing, crowdfunding, near field communication, GPS, location-based applications, real-time bidding and the Internet of all things.