This study investigates the use of a pulse-detecting camera, known as the PhysioCam, to improve the detection of pulse signals on the face. The purpose is to find the best lighting and camera conditions for capturing high-quality pulse data. By altering the lighting on participants' faces, researchers aim to generate a 'heat map' that identifies the strongest pulse signals.

Participants will undergo procedures where different lighting conditions are applied to their faces while the camera records the pulse signals. These procedures help in testing the effectiveness of the code used to create the heat map, ensuring that the best possible signal quality is achieved for future studies.

• Who can participate: Adults aged 18 and older can participate. Individuals taking medications for cardiac conditions or blood pressure, those with a pacemaker, and individuals prone to claustrophobia are excluded.
• Study details: Participants will have their faces exposed to different lighting conditions while a camera records their pulse signals. The study aims to find optimal conditions for capturing pulse data.