1. Corsense elite HRV device.
https://elitehrv.com/corsense
2. Psychopy.
https://www.psychopy.org
3. Tobii eye-tracking glasses.
https://www.tobiipro.com/product-listing/tobii-pro-glasses-2/
4. Ahmad, M., Keller, I., Lohan, K.S.: Integrated real-time, non-intrusive measurements for mental load. In: CHI 2019 Workshop: Everyday Automation Experience: Non-Expert Users Encountering Ubiquitous Automated Systems (2019)
5. CISM International Centre for Mechanical Sciences;A Berthold,1999