This awesome guitar uses a barcode scanner to play notes, and various arcade controls to manipulate those notes. The barcodes themselves scan as ASCII values, and their equivalent integers are ...

Why all the complication with two inverted character sets? Direction! The grocery checkout barcode scanner hasn’t changed much over the years. It’s mounted in a slot and items are passed over it.

QR codes are so popular that nearly every device with a camera lets you scan them. Here's how to do it with your phone, tablet, or computer. How to scan a QR code with an iPhone or iPad Both ...

That includes smartphones. You can scan QR codes on any Android device that has a camera, whether it's a smartphone or a tablet. And once you've scanned the code, you can open or share its URL ...

Here's how to do it with your phone, tablet, or computer ... A guide to the barcode's basics, why you're seeing it everywhere, and how to scan one How to use the Live Photo feature on your ...