The front sensor is a clinical-grade fingertip sensor typically found in medical oximeter devices. This front sensor is at the core of BioSense's high accuracy. It offers non-invasive and safe measurements of APG (measurement of vascular ageing), and Blood Pressure. 

Please note: 

• Your index finger must be clean and dry, otherwise it may affect the accuracy of the measurement.
• The APG service is only available if you have an active monthly subscription.