What is being changed for the next revision of the specification?
The next version of the Bluetooth specification will include an updated Radio specification and further definition for Profiles. While neither IrDA nor Bluetooth require the use of cables to achieve interdevice communication, IrDA requires that the devices be within line of sight in order to achieve communication. Since Bluetooth is based on radio transmissions, Bluetooth devices do not have to be within line of sight. Interdevice communication using Bluetooth may be achieved at much greater distances than IrDA even if there are obstructions between devices. Basically, as long as the radio transceiver microchips can hear each other, Bluetooth wireless communication is possible.
