Why do tools like Foursquare, Twitter and Facebook want to know my personal location?
How are QR codes, RFID and augmented reality glyphs related?
What does proximity mean?
What the heck is a geofence?
What is the “Internet of Things?”
What’s a deal service?
What’s a venue?
What’s a check-in on Foursquare? Or Gowalla? What does it mean when someone checks in?