SOS is the international distress signal in morse code — · · · — — — · · · — sent as one continuous prosign of three short flashes, three long flashes and three short flashes. The AnyTool SOS strobe flashes your whole screen bright white in that exact pattern at a steady 220-millisecond dit, and on supported phones it pulses the rear-camera torch in time, then loops until you stop it so rescuers have a clear, repeating visual signal at night.

The flashlight asks for the rear camera and, if the device exposes a torch capability, turns the LED on through MediaStreamTrack.applyConstraints with the torch constraint — this works mainly on Chrome for Android. On iPhones and browsers that do not expose the torch, there is no web way to control the LED, so the tool instead fills the screen with maximum-brightness white as a fallback light. The toolkit checks support first and tells you which one you are getting.

The location feature uses the browser’s Geolocation API to read your latitude, longitude and accuracy locally, then displays them so you can read them aloud or copy them to a rescuer. The toolkit has no server, no analytics and no tracking, so your position never leaves the device. Camera, motion and location permissions are requested only when you tap the relevant feature, and the whole toolkit keeps working offline once the app is cached.

These are convenience signalling tools — a strobe, siren, flashlight, compass and location readout — that depend entirely on your device, browser, permissions and battery, and some features are unavailable on many phones. They can help you attract attention as a last resort, but they are not a substitute for emergency services. In a real emergency, call your local emergency number, which varies by country (for example 112, 911, 999, 000, 111 or 119), and follow trained responders.