Frequently asked questions


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LYS for work


LYS is a zero-implementation solution. Just distribute the Buttons to participants and download the LYS app and you are ready to start. LYS provides online onboarding and our customer service team is here to support you every step of the way.

Changing your light habits can have an immediate effect on how energised you feel and how well you sleep. After just 2 weeks, the average user reports a 20% improvement in energy levels and a 17% improvement in sleep quality.

Yes, LYS takes your privacy and security seriously. We are fully compliant with GDPR and do not sell or share your personal data with third-parties. Read our privacy policy to find out how LYS processes data and for what purpose.

Yes, we can provide an API that links the LYS wellbeing platform to other systems.


LYS for research


Delivery takes 2-3 days for Europe, and 5 days for the rest of the world.

  • Spectral range of the LYS Button:
    LYS is an RGB sensor with a spectral range from 350-750nm.
  • Intensity range of the devices have in lux:
    0-100.000 Lux.
  • Units of measurement and definition metrics:
    Kelvin: Colour temperature measured in Kelvin
    RGB: Counts/μW/cm^2
    Lux: Light intensity measured in Lux
    Movement (3-axis accelerometer): Proxy for activity. Count the number of times acceleration exceeds 0.1875g (g=gravitational force) in any of the 3 axis over the logging time interval

The LYS Button has 18 hours of internal memory, which means that the LYS Button can be worn during a whole day without having to carry the phone. Once a day the phone should be next to the Button in order to enable data transfer.

Yes the LYS Button tracks light while charging. We recommend charging it during the night and to place to charging dock on the bedside table in order to track light while asleep.

LYS takes your privacy and security seriously. We are fully compliant with GDPR and do not sell or share personal data with third-parties. Read our privacy policy to find out how LYS processes data and for what purpose.