• Bluetooth

Bluetooth takes small-area networking to the next level by removing the need for user intervention and keeping transmission power extremely low.
Bluetooth radio technology provides a universal bridge to existing data networks, a peripheral interface, and a mechanism to form small private ad hoc groupings of connected devices away from fixed network infrastructures. Designed to operate in a noisy radio frequency environment, the Bluetooth radio uses a fast acknowledgment and frequency hopping scheme to make the link robust and secure.
Integrating Bluetooth in devices make a viable solution for low power data transmission moving in this direction major players in the arena has adopted a new technology called WIBREE (henceforth to be know as Low power Bluetooth). Wibree is implemented in lifestyle products like watches, music players and other similar gizmos.
Bluetooth achieves its goal by embedding tiny, inexpensive, short-range transceivers into the electronic devices that are available today. The radio operates on the globally-available unlicensed radio band, 2.45 GHz (meaning there will be no hindrance for international travelers using Bluetooth-enabled equipment.), and supports data speeds of up to 721 Kbps, as well as three voice channels. The Bluetooth modules can be either built into electronic devices or used as an adaptor. Bluetooth radio modules avoid interference from other signals by hopping to a new frequency after transmitting or receiving a packet. Compared with other systems operating in the same frequency band, the Bluetooth radio typically hops faster and uses shorter packets.
Emissions from Bluetooth enabled devices will be no greater than emissions from industry-standard cordless phones. The Bluetooth module will not interfere or cause harm to public or private telecommunications network.

GSM

GPRS

GPS

OBD

RFID