How does a wireless keyboard work? Does the keyboard have to be within line of sight of the computer? How far away from the computer and reciever thing will the keyboard still work? Thanks!
(Modern) Wireless keyboards work using Bluetooth pairing. As long as the computer has a bluetooth module in it it will be able to pair with the keyboard. Range depends on how powerful the transceivers are on both the keyboard and computer but the standard is 32 feet and does not need line of sight.