Wearable electronic device and method for securing same

摘要: The disclosure is directed to a wearable device that configured secure itself based on signals received from pulse sensor. According one implementation, the sensor includes light source (e.g., light-emitting diode) and photo source, under control of processor, shines having particular wavelength green or infrared). generates it senses. For example, when reflects off person's skin, then will generate reflected detects. In this manner, can accurately determine whether being worn by user taking photoplethysmogram) and, necessary, electronic device.