Support

Email support@signalbeacon.app. Include your iPhone model and iOS version.

Broadcast sends a message: as a flashing light in Morse code (far away, line of sight), or as a screen code (up close).
Scan reads one. Point the camera at the light or code. Tap the blinking light to lock on. The Auto control sets sensitivity for you.
Talk is a two-way conversation over light between two phones: one calls, the other answers.
Hold the phone steady, and set the two phones to the same speed if a message won't read. Slower is easier to read.
No second phone? Try the web reader or the Morse game.

The app flashes a light rapidly. Don't use it if flashing lights can trigger seizures or migraines for you or anyone nearby.
Signal Beacon is an aid, not a substitute for emergency services. If you can, call your local emergency number.