Wireless optical communication
This communication is best suited for wireless communications because of the high speed transmission rate as well as because of the optical career nature. They are small in size and thus can be easily simplified and have the structure of both the transmitter and the receiver. They do not need any kind of license. They are not affected by any kind of EM interferences and so, they can be used for the restricted scenerios and interferences as well.
They do not require legal procedures and any of the prior installations as well. They are the very well established commercial kind of devices and they offer standard offerings as well. They are the one which can be intercepted very easily and does not require high quality of codification as well. It is not easy to access the data without its detection.