VIEWS: 22 PAGES: 21 CATEGORY: Mobile Devices POSTED ON: 4/30/2011
Bluetooth is basically the same with both infinite infrared transmission, but use different frequency bands. The principle is the use of the infrared spectrum than visible red light is not visible, because infrared light is a kind of, it also has the characteristics of light, it can not pass through opaque objects. Not because we do not see infrared, it means it does not exist, we live around the full infrared light, which may be issued from the light, the sun may also be sent, the user does not need to use the license that you can use the infrared.
"IrDA Infrared Communications_ An Overview"