Another advantage is that VLC data transfer is more secure than radio signals, since the receiving end must have a photodetector and a simple curtain is enough to stop potential eavesdroppers.

• 采用VLC传输数据的另一个优点是，它比采用无线电信号要安全。这是因为接收端必须有一个光探测器，而且即使通信被窃听，把窗帘一拉就能阻止窃听了。