Open CKey Findings
Research write-ups on CKey, the open optical code: field-test analyses and studies from the Open CKey Project and its community.
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Rendered readability of CKey designs on screens: tone, contrast, vignettes, mark shape and the room around the display
We studied how the visual design of a CKey symbol shown on a screen affects how reliably a phone camera can read it. We compared colour pairs, luminance contrast, background vignettes and mark shapes. The evidence comes from two places: field observations with an iPhone and two consumer displays, and a controlled…
Keywords: CKeyoptical codesscreen displayluminance contrastvignettemark shapeCIEDE2000design guidance