System using radio-frequency, infrared, microwave, or other types of electromagnetic or acoustic waves in place of wires, cables, or fibre optics to transmit signals or data. Wireless devices include
cell phones, two-way radios, remote garage-door openers, television remote controls, and GPS receivers (
see Global Positioning System). Wireless modems, microwave transmitters, and satellites make it possible to access the
Internet from anywhere in the world. A Wireless Markup Language (WML) based on
XML is intended for use in such narrow-band devices as cellular phones and pagers for the transfer and display of text.
For more information on wireless communications, visit Britannica.com.