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Controlling the range of Bluetooth in my Laptop

By praveenchandar007 ·
hey, i need to reduce the range of the bluetooth in my laptop.Is there any way of doin , can we program and control the range. if any one knows about this help me out. If this is not feasable please tell me a way out ,i need a cost effective bluetooth device whose range is less than 5 feet

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Well, it depends......

by robo_dev In reply to Controlling the range of ...

Bluetooth provides three power classes,

Class 3 Devices 100mW Up to 100 meters
Class 2 Devices 10mW Up to 10 meters
Class 1 Devices 1mW 0.1-10 meters

Manual power adjustment is not an option in any devices I have seen. You can shut off the interface when you are not using it.

Range all depends on the antenna that is receiving it, so limiting output power provides some additional security, but it all depends...

See link below for BlueSniper Rifle:
http://www.tomsnetworking.com/2005/03/08/how_to_bluesniper_pt1/

With the above high-gain antenna, Class II device communication could be observed from .75 miles away, which is approximately 234 times beyond the stated 'range' for class II devices. Actual mileage will vary depnding on weather, terrain, building materials, etc.

Most internal laptop bluetooth devices are class II, but many aftermarket BT dongles are class I.

If you are developing a product, you can build in manual power adjustment.
http://www.ip-extreme.com/ip/xbluedevkit.html

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