I was at the grocery store yesterday, scanning my own items at the self-checkout, and it got me thinking—how do these barcodes actually hold all that info? I mean, it’s just a bunch of lines, right? Sometimes it even feels like the scanner knows more about the product than the cashier! Has anyone else noticed how fast it can pull up prices, stock info, and even discounts almost instantly? I feel like there’s some hidden tech at work that most of us never really consider.