I will start working in a warehouse very soon and I am a little bit afraid because I have never worked at the till before and want to know how it works when you use a bar code scanner?

I will start working in a warehouse very soon and I am a little bit afraid because I have never worked at the till before and want to know how it works when you use a bar code scanner?
using a scanner is easy, you just pass the product pass the scanner and if it scans correctly the scanner will beep. If the item doesn't scan you will have to manually key in the barcode number. Sometimes the item will scan but the product won't be in the computer system so you will have to get someone else to go and check the price and then manually enter the product price under a product category code or something similar.