The transition of information signals without a physical connection, through technologies such as cordless telephones, cellular telephones or microwaves.

Sending signals without a physical connection using technologies such as cordless telephones, cellular telephones or microwaves.

Any broadcast or transmission that can be received through microwave or radio frequencies without the use of a cable connection for reception.

Communication that takes place via airwaves as opposed to cables or telephone lines. It is estimated that by 2003 nearly 62 million people will use wireless devices (such as cell phones or PDAs) to access the Internet, an increase of about 728% since 2000.

Communication between a computer and another computer or device without wires. The form of wireless communication provided as part of the Windows operating system uses infrared light to transmit files. Radio frequencies, as used by cellular and cordless telephones, are another form of wireless communication.\ See also: infrared (IR); infrared device; infrared port