An unobstructed view from transmitter to receiver. Satellite, infrared (IR) and microwave transmissions require line of sight between nodes, whereas portable phones, cellphones and wireless LANs (Wi-Fi) do not. Bar code systems must also have line of sight between the scanner and the printed bar codes on items. Contrast with RF.
Search For line of sight On ChannelWeb
Find the latest news and information on line of sight from across the Channelweb Network of IT Web sites.