| CPC G06K 7/1417 (2013.01) [F21V 21/30 (2013.01); F21V 23/003 (2013.01); F21W 2131/406 (2013.01)] | 11 Claims |

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1. A method, comprising:
providing a lighting device wherein at least one electrically powered light generator is coupled to electrical circuitry configured to produce electrical signals to drive the at least one electrically powered light generator,
storing in the electrical circuitry an electrical marker signal of the lighting device, and
displaying the electrical marker signal in a visual display unit coupled to the electrical circuitry,
wherein the electrical marker signal is displayed on said visual display unit as a visually recognizable optical mark, and
wherein the visually recognizable optical mark is a Quick Response (QR) code.
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