SIGNAL MIRRORS
A signal mirror is an old and proven technique for making yourself visible, warning others, and attracting attention. By reflecting light from the sun or another light source, you can be seen from a very long distance. The technique of signal mirrors has long been used in the military – not least by pilots to call for help in the event of a crash.
Signal mirrors - attract attention and signal completely silently
With a signal mirror, you can signal to planes, helicopters, boats, or really anything and anyone. You can be seen at long distances and it happens completely silently – an advantage is that it works in environments with very loud noises that interfere. A smart thing to carry for anyone who is out in terrain where electronics do not work or fail.