So, you've probably seen those square-shaped codes popping up everywhere, right? They're called 2D barcodes, and they're a bit different from the usual stripes you're used to seeing. These little guys are changing how we track products, manage stock, and even how we, as shoppers, find out about what we're buying. It's a pretty big deal, and we're going to chat about why they're so important and what you need to know about them.