Abstract: Methods and apparatus for noninvasive measurement of vital signs is provided. The apparatus comprises at least one sensor configured to sense biological signals including a photoplethysmogram (PPG), and at least one computer processor programmed to determine a plurality of vital signs based, at least in part, on the sensed biological signals, wherein the plurality of vital signs include at least two of heart rate, blood oxygenation, heart rate variability, blood pressure, blood sugar, cholesterol, pulse rate, pulse pressure, temperature, and respiration rate.