How iPhone turns the Camera app into a code reader On iPhone, the built in Camera app is the primary gateway to this hidden scanner. When you open Camera on your iPhone and point it at a QR code, the ...

For the uninitiated, Coinbase — a cryptocurrency exchange — ran a 60 second spot that featured a QR code bouncing around in a way reminiscent of old DVD screensavers. It was a roaring success.

QR codes have quietly become the remote control for everyday life, from restaurant menus to parking meters to office sign-ins. That convenience is exactly why security experts keep repeating a simple ...