Validation of the Blood Pressure Monitoring Function

Inclusion Criteria: The subjects should be aged 20 or older, with an equal gender distribution of 50% male and 50% female. From this group, 85 subjects with reasonable data values will be selected, with a requirement that at least 30% of them are male and at least 30% are female. Additionally, they must meet the following blood pressure conditions: 1. At least 5% (5 individuals) of the participants should have reference systolic blood pressure readings ≥ 160 mmHg (21.33 kPa). 2. At least 20% (17 individuals) of the participants should have reference systolic blood pressure readings ≥ 140 mmHg (18.66 kPa). 3. At least 5% (5 individuals) of the participants should have reference systolic blood pressure readings ≤ 100 mmHg (13.33 kPa). 4. At least 5% (5 individuals) of the participants should have reference diastolic blood pressure readings ≤ 60 mmHg (8.0 kPa). 5. At least 20% (17 individuals) of the participants should have reference diastolic blood pressure readings ≥ 85 mmHg (11.33 kPa). 6. At least 5% (5 individuals) of the participants should have reference diastolic blood pressure readings ≥ 100 mmHg (13.33 kPa). Exclusion Criteria: 1. Pregnant. 2. Having any of the following conditions: * Arrhythmia * Medical assessment indicates that poor blood circulation would affect the blood pressure data collection. * Involuntary hand movements that would affect the blood pressure data collector. * Nail polish on the light sensor area of the fingertip oximeter. * Other conditions as determined by a physician that make the individual unsuitable for participation in the trial.