QR codes Digitally Enhance Snail Mail
It goes on to say, "The quick response codes are printed on the envelopes for free for customers that are sending their mail through the Express Post or Express Courier International Service from the postal service. The service comes with an instruction card that signals to the recipient that this is more than just a standard barcode. It encourages them to download the Video Stamp app, for free, from the Apple App Store and from Google Play."
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