Velcroman1 writes: Retailers are experimenting with a variety of new ways to track you, so that when you pick up a shirt, you might get a message about the matching shorts. Or pick up golf shoes at a sports store and you see a discount for a new set of clubs. New technologies like magnetic field detection, Bluetooth Low Energy, sonic pulses, and even transmissions from the in-store lights can tell when you enter a store, where you go, and how you shop. Just last year, tracking was only accurate within 100 feet. Starting this year, they can track within a few feet. ByteLight makes the lighting tech, which transmits a unique signal that the camera in your phone can read. The store can then track your location within about 3 feet — and it's already in use at the Museum of Science in Boston.
You can bring any calculator you like to the midterm, as long as it
doesn't dim the lights when you turn it on.
-- Hepler, Systems Design 182