Steady climb for short-range wireless tech

What is Bluetooth technology?
A technology for wireless personal area networks, which provides a way to connect and exchange information between devices such as cellphones, laptops, PCs and digital cameras via a short range radio frequency.

What is Zigbee?
A wireless network used for home, building and industrial control with a maximum speed of 250Kbps at 2.4GHz; Designed for low power so that batteries can last for months and years; Typical transmission range is around 50m.

What is Wi-Fi?
Short for wireless fidelity, Wi-Fi (also known as WiFi and wifi) is a brand originally licensed by the Wi-Fi Alliance to describe the underlying technology of WLAN based on the IEEE 802.11 specifications, whether 802.11b, 802.11a, dual-band, etc.