ZigBee

A low-power, low-data-rate wireless networking protocol based on the IEEE 802.15.4 standard, designed for short-range communication between devices in personal area networks. In accessibility and assistive technology contexts, ZigBee has been used in indoor navigation and wayfinding systems to create networks of small, battery-efficient sensor nodes that can communicate location and environmental information to assistive devices. Its low power consumption makes it suitable for solar-powered or battery-operated devices deployed throughout buildings as part of ubiquitous computing accessibility infrastructure.