Bluetooth is the popular name for the 802.15 wireless networking standard, which is useful for creating small personal-area networks (PANs).
It links up to eight devices within a 10-meter area using low-power, radio-based communication and can transmit up to 722 Kbps in the 2.4-GHz band.
Wireless phones, pagers, computers, printers, and computing devices using Bluetooth communicate with each other and even operate each other without direct user intervention.
Bluetooth has low-power requirements, making it appropriate for battery-powered handheld computers, cell phones, or PDAs.