Quick Response (QR) codes have been in use for quite some time, but this doesn’t mean they are proof against changing technology and cultural tastes. On the surface, this seems to indicate code use is better utilized in (short term) marketing material. However, if you plan for possible future changes, or only use QR for extra bonus information or material that wouldn’t be included in a “normal” printed book, these codes may bring lasting added value.

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This section is drawn from
http://www.gregathcompany.com/publish/design/qr.html

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