The term often used is “扫一扫” (sǎo yī sǎo), “sweep a little” (as with a broom). I prefer this operative verb to our “scan”, which conjures images of tricorders and medical equipment.

Dan Grover, in his observations on ‘Chinese Mobile App UI Trends’, describing his experience of relocating to China, explains the term used by the Chinese for describing the act of scanning a QR Code.