Most interesting thing I've seen today (post-eclipse): 16 Ways QR Codes are Being Used in China https://t.co/Ntv6TfaSAs — David Wessel (@davidmwessel) August 21, 2017
Most interesting thing I've seen today (post-eclipse): 16 Ways QR Codes are Being Used in China https://t.co/Ntv6TfaSAs
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