Where does wi-fi sit on the winding road of wireless technologies? Nicely in the middle. Unlike with cell phones, however, you can't yet switch seamlessly from one wi-fi antenna to another
SHORT-RANGE RADIO
Typically found in a cordless computer mouse or keyboard sending little bits of data. Must be near a receiver
INFRARED
Used in nearly every remote control on earth, this powerful short-range system is also found in PDAs
BLUETOOTH
Short-distance radio popular in phones, headsets and, lately, car speaker phones. It's also used in some computer devices
WIRELESS ETHERNET(WI-FI)
In a home, office or "hot spot," wi-fi allows Internet...
