barcodes scanners

Hey all, so what I'm trying to do is set up an accountability system for people that I have to manage (about 120 to 150 people every day). Every person has an ID card that we can scan that gives us their names, along with some other string of numbers that are specific to that card. For the...

I recently took over the duties of a colleague and i participe in the logistic department activities and I am responsible for the purchase of products and now it comes the dilemma. Because I am a non-technical person, I would like to know the difference between two products bar codes readers...