Posts by LaserGuy
A laser can be used. There are some lasers with SOS function but it is not necessary. The beam is visible from large area and they can locate you easily. It should be so powerful to be seen but no...
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A laser can be used. There are some lasers with SOS function but it is not necessary. The beam is visible from large area and they can locate you easily. It should be so powerful to be seen but no...