The most lightweight (but fast, efficient, and feature-rich) QR code scanner and barcode scanner app for Android you could ever find on Google Play Store
It’s very easy to use, no need to press any buttons or adjust the zoom, just open it and point to the QR code, it will auto recognize...
Here is an early look at Instagram Nametags which are basically the same as Snapchat QR codes, letting you take a picture of someone's Nametag to connect and start following them.
Someone with the Nexus 6P just learned that the camera application will scan a QR code for you if you focus on it. This may not work with all camera apps, but it does seem to work with the Google Camera application.
Snapchat has had a way to share your profile with other people via QR codes, and you can do this on Twitter now too. All you have to do is view your profile, tap/click the gear icon and then tap/click on QR Code.
An update to the Walmart app introduced Walmart Pay with QR codes. Rather than tapping your phone on a payment terminal to make a mobile payment, loyal Walmart customers can open the app and simply scan a QR code which then gets validated within the app and charges the credit card of bank...
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