The display knows when a hand is coming near it thanks to infrared sensors, which respond before the fingers reach the surface and break the depth illusion.
显示器带有红外感应器可以感知用户的手的接近，在手到达显示表明之前的做出响应，打破深度的幻觉。
2
The point of this measurement was making use of infrared signal, on one hand which was the reference variable, on the other hand which was the channel for the data.
Conclusion SGB by polarized infrared light can obviously increase the blood supply in arms of should hand syndrome patients, as a safety, simply, can be repeated method.