Short-Range Wireless Communication Technologies

This group gathers wireless data communication standards engineered for short-range links between nearby electronic devices, rather than long-distance broadcast or cellular communication. Wi-Fi, based on the IEEE 802.11 family of standards, lets nearby digital devices exchange data by radio waves for local area networking and Internet access, typically over tens of meters indoors. Bluetooth is a short-range wireless technology standard used to exchange data between fixed and mobile devices and to build personal area networks over a working range usually measured in single-digit meters. Near-field communication narrows the same wireless principle even further, enabling communication between two electronic devices separated by four centimeters or less, commonly used for contactless payment and device pairing. Together the three members illustrate a deliberate range hierarchy, from wide local-area coverage down to near-contact proximity, that engineers select from according to a device's intended use.