You've probably noticed a square barcode pasted to a graffitied light pole or on the back of a business card. That pixelated code, shaped in a square, is called a QR ...
https://www.india.com/video-gallery/paytm-app-hacks-and-tricks-how-to-scan-qr-code-sent-on-whatsapp-watch-video-tutorial-5078883/ Copy Paytm Tips And Hacks: Paytm, a ...
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