Scanning A QR Code That's Already On Your Phone Is Actually Simple - Here's How

On iPhone, open the saved QR code in Photos and tap and hold it. On Android, open it in Google Photos and tap Search to scan ...
来自MSN

Your phone has a hidden barcode scanner, use it in seconds

Your smartphone already carries a capable barcode and QR code scanner, tucked into tools you probably open every day. With a couple of taps, you can turn the camera ...