European Researchers’ Night 2022: Vienna (Austria)

Can LEDs talk?

Event Name: Can LEDs talk?
Description: Presentation of our work in LiFi technology.
Date and Time: 30 September 2022 – 15:00-24:00 Vienna and online
Speakers: Behnaz Majlesein (LightBee), Damon Ye (TU Delft), Jagdeep Singh (Toshiba) and Ömer Dalgiç (SUPSI)


Almost all light sources in our environment are based on LEDs. They are widely used for lighting homes, offices, street lamps and submarines, to name just a few examples.

However, LEDs also have great potential for providing information through illumination. LEDs can be switched on and off quickly, at a speed that the human eye cannot perceive, but everyday devices, e.g. smartphones/tablets with ambient light sensors or cameras, laptops with cameras, can detect this change. To the human eye, LEDs appear to be fully on with no change in lighting quality. However, light sensors detect this small change and convert it into digital information. Using this property, LEDs send out information; on the other hand, users with light sensors can retrieve this information. This makes it possible to talk to the light.

In this show, we will introduce talking to LEDs for various applications ranging from locating a device to controlling it in different environments.

The European Researchers’ Night is a Europe-wide public event, which displays the diversity of science and its impact on citizens’ daily lives in fun, inspiring ways. This year, the event will take place in 25 countries on Friday 30 September 2022.

The European Researchers’ Night aims to:

  • bring research and researchers closer to the public
  • promote excellent research projects across Europe and beyond
  • increase the interest of young people in science and research careers
  • showcase the impact of researchers’ work on people’s daily lives

The European Researchers’ Night attracts each year more than 1 million visitors in Europe and beyond.


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