As you make your way through the world of Android, you’ll start to notice QR codes everywhere—that weird square in the above photo that looks like a fingerprint is a QR code. Use Barcode Scanner to scan those doohickeys and revel in the strange and wonderful information that is your reward.
Barcode Scanner can also—you know—scan barcodes. So the next time you’re in Best Buy and you wonder if $40 is a fair price for an HDMI cable, scan it and buy it for $3 online, directly from your phone.
Link: Barcode Scanner
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