How bluetooth differs from infrared in performance ?

[Grayson]

I am HSC student and looking forward to take networking as my feature. I had a bit of confusion as far as the wireless technologies were concerned. In current world we use bluetooth to transfer the media files among the devices which are in a closed vicinity. The infrared technology was also used to do the same task , but it is not used in current mobile phones. I had heard that infrared was more safer than blue tooth , so why was discrarded from the devices. Please explain .

[Jackson2]

You looked the positive part only of the infrared. Do not you think there would be any issue with the infrared and advantage of bluetooth over the infrared. Yes there was. If you would have the users of mobile phones who had infrared in their phones, while transferring any of the media files the devices needs to be attached to each other . This is not in case of Bluetooth. The only plus point of infrared over bluetooth in the mobile was security. It was more secure than bluetooth.

[Techno01]

Now a days the bluetooth utility is also available in the laptops as well. most of the people use it to transfer documents among two laptops or between a laptop and a mobile . Although the speed in the bluetooth is slower as compared to other wireless technologies and routers. It can be very useful. If two blutooth configured devices are using it for the for the first time then these devices are required to be paired with each other. Infrared did not required any such pairing.

[Trio]

The biggest difference between bluetooth and infrared is that , infrared cannot penetrate opaque objects , while a bluetooth device can if it is in it's range . It's range lies between 10-100 metres. The best example of infrared is the the remote control of the television set. If you closely observe a remote control , it has a diffuser, any button on the remote control is pressed it should be in the line of sight of a receptor. When pressed any button the diffuser emits the light signal or optical signals and is received by the receptor. HomeRF is one more wireless technology used .