It states that the application to detect the heartbeat is not used the camera of the device.
This app is based on a very simple principle and precisely: the heart rate increases with increasing body temperature, then measuring its beats is possible to have a reliable measurement of their body temperature.
"DetectsFever" is very simple to use: just create the user profile entering your name, number of heartbeat and body temperature.
IMPORTANT: To ensure maximum accuracy, the measurement should be carried out beats trying to keep the maximum relaxation for at least 30 seconds. The app still does not replace the thermometer as a diagnostic tool.