Uses the LED flash to send Morse Code and the camera to receive and decode Morse Code flashes into text. Aim the receiving device until a sending devices flash is centered in the cross-hairs of the camera preview pane. Flash communication works best when the sending device is flashing in front of a very dark or black background. You may need a steady hand to keep the flash centered in the cross-hairs continuously.

To send, select between the front display and the LED flash (when available). Type text in and hit "Flash Morse" to send.

The Morse Code transmit/receive speed is settable from 3 to 10 WPM. Lower Morse Code WPM speeds may work more reliably. The WPM speed setting of the receiving device must be set identical to that of the transmitting device for the decoding to function properly. The first several characters received may be garbled while the camera input is calibrating the sensitivity level. (Use with other Morse Code flash apps is not recommended unless you know the exact WPM transmit speed.)

Extended use of the LED flash may cause a significant decrease in battery life.

For decoding audio Morse Code/CW signals using the mic, please see the HotPaw MorseDecoder app, also in the App store.