An electronic device and method are provided having an optical image sensor and a capacitive proximity sensor. A pin hole opening within a ring electrode of the capacitive proximity sensor is integrated into and used by the optical sensor. Inner and outer electrodes of the ring electrode can be centered about the pin hole opening and spaced apart to perform capacitive proximity detection of a live finger. When brought in proximity to the ring electrode, the finger can be imaged using the present integrated capacitive proximity sensor with an optical sensing mechanism that utilizes the pin hole to not only allow for micro-imaging of an object, such as a finger, but also to provide high resolution fingerprint comparison and blood oxyhemoglobin saturation comparison for biometric control and access to an electronic device, such as a mobile phone.