Featured in QR codes
These 3D-printed objects have scannable barcodes that you can’t see
The secret ingredient is infrared light.
Don’t get scammed by fake QR codes
Criminals can use the codes to try to steal money and personal information. Here's how to stay safe.
United fliers can soon use PayPal’s new QR codes to buy chips and booze in the sky
The company is partnering with United Airlines to roll out in-flight QR code payments, starting at Chicago O’Hare.
QR codes are a smart way to share data. Here’s how to make your own.
Never spell out your Wi-Fi password again.
QR codes are everywhere now. Here’s how to use them.
These intricate patterns hold URLs, apps, Wi-Fi passwords, and more.