Decode Morse code using your rear camera Simply point the camera to the blinking light and make sure the light stays in the red circle. If the light blinks at a frequency that is too fast or too slow (using the default transmission settings as a comparison) expect to lose the first 2 characters, but after that, the decoding algorithm will adapt itself to the new frequency and you will lose NO more characters. This new setting will be saved for as long as you stay in the app. Pinch Zoom is also a