I'm having a bit of a weird issue with my barcode scanner under OSX (El Capitan). It's a generic barcode scanner, Proster branding, with a Megawin USB-UART chip inside so it acts as a USB Keyboard.
When I try and use it in OSX to enter a barcode into TextWrangler for instance, it inputs digits OK, but they are all wrong - the barcode entered is nothing like the barcode scanned. Using the scanner in Windows, the barcode is entered fine.
I've tried putting the device into serial mode (it doesn't show up in OSX), tried changing keyboard layout in the detection wizard, and fiddling with some of the other settings, but no success. Any ideas?