Skin Tone Measurement Method Investigation for Pulse Oximetry

The primary objective is to gather missing information in order to form a well-founded recommendation on which is the preferred skin pigmentation measurement (PPM) methods in the context of pulse-oximetry.

Inclusion Criteria:Adults (18-65 years)Fluent in either English or DutchParticipants who are willing and able to provide informed consent themselves.People with Von Luschan scores <18 ('light skin' group) or > 25 ('dark skin' group).Exclusion Criteria:Skin conditions that could potentially interfere with the measurements:piercings/ink/henna tattoos that cover the left forearm, hands, fingers or foreheadvascular or pigmentary or renal psoriasisepidermal bullosumother diseases that affect the skin (tone) of the bodyCOVID-19 exclusion criteria*:Currently displaying COVID-19-related symptoms, namely a fever, cough and/or difficulty breathingHaving been positively tested as infected with COVID-19 in the past 14 daysTravelled to or from high risk COVID-19 areas in the past 14 daysBeen in contact with a (suspected) COVID-infected person in the past 14 daysNot being able to travel to Eindhoven 3 times, and/or not being able to comply with the study proceduresSunbathing during the study duration or substantial sun exposure (due to holidays for example).Known allergic reaction to facial make-upUsage of tanning sprays/cremesWearing make-up during the study visits (mascara is allowed)No testing will be performed in the study. Participants will be asked if they have been positively tested.