Datenübertragung mit Licht ist beinahe so alt wie unsere Kultur selbst. In der Antike nutze man Leuchtfeuer, um Hafeneinfahrten zu markieren. Schon der griechische Dichter Aischylos beschreibt in seinem Drama „Agamemnon“, wie die Nachricht vom Sieg in Troja über eine Kette von Leuchtfeuern ins hunderte Kilometer entfernte Argos gelangte. Heute nutzen wir binär codierte Infrarot-Lichtsignale im Alltag meist, um per Fernbedienung die wenigen Meter zu unserem Fernseher zu überbrücken. Nach Zukunftsmusik klingt das erstmal nicht.
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