This organization houses the code and metadata for the Metadata4Wearables project. The project grew out of independent efforts of group of researchers interested in standardising and harmonising actigraphy data (the "Chronobiology Data Standards Interest Group", abbreviated as CDSIG) and the Daylight Academy Group The role of daylight for humans with the goal to harmonise metadata for light exposure data.

The efforts presented here are work in progress and are not to be considered final. We invite contributions.

We provide the following resources:

• Metadata schema (code)
• Web-based validator (code, live site, future live site)

• Grégory Hammad, University of Liège [0000-0003-1083-3869]
• Christine Blume, University of Basel [0000-0003-2328-9612]
• Christina Schmidt, University of Liège [0000-0002-1114-5112]
• Debra J. Skene, University of Surrey [0000-0001-8202-6180]
• Katharina Wulff, Umea University [0000-0003-2480-3329]
• Nayantara Santhi, Northumbria University [0000-0003-4568-1447]
• Mirjam Münch, University of Basel [0000-0003-2087-9916]
• Manuel Spitschan, Technical University of Munich [0000-0002-8572-9268]

For any questions or comments, please write to Manuel Spitschan (manuel.spitschan@tum.de).