The scanning gun only analyzes the bar code on the commodity package (the bar code is shown in the figure), and the function of the scanning gun is to analyze these bar codes into the following numbers instead of directly identifying the numbers.

So you said to write down the price and scan it. Of course, it is obviously not feasible ~ ~

I suggest you know more about this kind of related products: bar code printers. It's expensive ~ if you really need it, think again.