摘要 |
A ticket printer (1) is disclosed that comprises a plurality of LEDs (6) for emitting light that is visible to a user removing a ticket, wherein the printer is able to transfer information to the exterior, using the light of the LEDs (6) without adding further light emitting means, by means of a modulator that enables the LEDs (6) to emit a pulsed light signal that contains information on the identity of the printer (1) and which can be received and read by an external decoder. |