Since wedding season began, 40-year-old Hanoian Thanh Danh cannot recall how many wedding invitations he’s received in the form of QR codes. Whenever he receives such impersonal invitations, he never ...
Designed as a high-tech marketing resource, QR (quick response) codes have many useful applications. These (usually) black-and-white algorithmic codes are gateways to a potential multimedia nirvana.
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