The VISION-Acute Study

Following informed consent, the study staff member will complete a very brief set of demographic and medical history questions, limited to the presence or absence of medical problems and treatment for them. Participants will be recruited into either Group 1 or Group 2 depending on their previous clinical observations assessed during screening. * Group 1 participants will have oxygen saturation, heart rate and respiratory rate measured. * Group 2 participants will have blood pressure and respiratory rate measured. For all participants, the study team will complete a set of pre-measurement observation questions. Background luminosity will be measured using a handheld lux meter. The staff member will then prepare for and take the participant's routine observations using standard clinical equipment during the same 60-second period that video is captured of the participant's face using Lifelight® Data Collect (from which only the RGB data will be uploaded to the cloud). These measurements and RGB data capture will be repeated two times following the initial observations. Once measurements are concluded, the study staff member will complete the post-measurement observation questions.