Differentiate Barcode Inputs from Keyboard Inputs

This is a simple trick designed to Distinguishing Barcode Scanner inputs from Keyboard inputs in WinForms (c#).   The problem We need to be able to listen to keyboard strokes no matter which form or control currently has focus. Since we’re listening to this cacophony of keyboard strokes from all controls in the application, we need to be able to distinguish between strokes that come from the keyboard and strokes that come from the barcode [...]