Phone in the infrared is what?

Users questions:Some mobile phones with infrared capability, but I do not know what that means. Can tell me?
Experts answer: infrared communication, by definition, that is, transmit data via infrared. In the early stages of development of computer technology, data is transmitted via cable, the cable transmission connection trouble, need a special interface, rather inconvenient.So then there is an infrared, Bluetooth, 802.11 and other wireless data transmission technology. Early in the infrared communication technology development, there are several infrared communication standards, different standards can not be between the infrared device for infrared communication. In order to make a variety of infrared devices to interoperate in 1993 by more than 20Initiating the formation of large manufacturers China Internet Network Sina free e-mail survey to rise to 30 trillion in value was registered by Wang Pu Yi Meier's network into the luxurious gift of the Infrared Data Association (IrDA), unified standards for infrared communication, which is currently being widespread use of IrDA infrared data communication protocols and norms.
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