A viewer can scan the barcode with their cell phone to access a mobile version of the print , with the actual audio overlaid on it .
观看者可以使用自己的手机扫描二维码获得画作的手机版,原声已加载在上面。
A big benefit is that surgeons do not need to keep looking up and down , switching their gaze between the patient and displays on nearby equipment ; instead , the information can be directly overlaid , in effect giving the surgeon x-ray vision and other superhuman powers .