Costco is testing a feature that would allow customers to scan items in its warehouses and pay for them on their phones, ...

Costco is shaking things up, and it’s looking to rival Sam’s Club for inspiration. During the company’s third-quarter ...

Using a QR code is simple: Open your camera app on your smartphone. Most modern Android and iOS devices have built-in QR scanning functionality in their default camera app. Point your camera at the QR ...

Our classes are not designed to protect against a malicious caller. You should not use them for communication between trusted and untrusted code. For the mainline flavor, we test the libraries using ...