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According to the BBC, the unnamed photographer "had become lost after walking onto ice off St Peter-Ording to photograph a sunset," and Kristen Stielow spotted him via a webcam operated by St Peter-Ording's local tourism board. Police were then able to locate the lost German tourist and guide him back to shore by flashing their car lights.
The happy ending to this latest incident is yet another reminder -- much like the iPhone app that helped save a man's life after the Haiti earthquake -- of how technology we may take for granted on a daily basis can be used for greater purposes.