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Scanning bar codes and QR Codes with App Inventor Apps | App Inventor 2 – Learn to Code (Learn2c.org)
QR Code Scanner - MIT App Inventor Help - MIT App Inventor Community
Downloading with a QR Code - Learning MIT App Inventor: A Hands-On Guide to Building Your Own Android Apps [Book]
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Scanning bar codes and QR Codes with App Inventor Apps | App Inventor 2 – Learn to Code (Learn2c.org)
Scanning bar codes and QR Codes with App Inventor Apps | App Inventor 2 – Learn to Code (Learn2c.org)
AppInventor: QR code for .apk does not allow to download apk file - Stack Overflow
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Barcode Scanner With APP INVENTOR : 5 Steps - Instructables