Optical code

摘要

A method of presenting an optical code on a display is described. The method comprises: presenting the optical code in a first format at a first time period so that the optical code can be captured and decoded by a mobile device, such as a smart phone. The method also comprises presenting the optical code in a second format at a second time period. The second format is visually different to the first format to a human but when captured and decoded by a mobile device, the second format produces the same decoded results as the first format.

主权项

1. A method of presenting an optical code on a display, the method comprising:
presenting the optical code in a first format at a first time period so that the optical code can be captured and decoded by a mobile device; presenting the optical code in a second format at a second time period; wherein the second format is visually different from the first format to a human but the optical code is captured and decoded by the mobile device in the same way to produce the same decoded results in the second format as in the first format; and presenting text included with the optical code that informs the human that if the optical code does not change between the first format and the second format then the human should not use the optical code.