https://connect.na.panasonic.com/toughbook/accessories/fz-vb...
https://connect.na.panasonic.com/toughbook/accessories/fz-vb...
The barcode scanner drops the likelihood of typos in part and serial numbers
I've heard it said that an airplane is ten thousand parts flying in formation: keeping track of maintenance and replacement parts is important in many (safety-critical) industries, and so having a scanner that one doesn't have to remember, lug around, and fumble with [0] could be useful.
The barcode scanner, believe it or not, was useful to scan barcodes.
These days a smartphone is a much better choice.
They sure beat camera based ones yes (although they technically also use a camera but it's really optimised for the purpose)
Most of the couriers that come to my door also use these or similar, not standard smartphones.
It seems comparable to the laser based scanners used at library checkouts for example.