Randy Sarafan defies easy description. He’s clearly a polymath of some sort, a provocateur watch film of more than one sort, and a cannon (perhaps loose perhaps not) on the deck of technology. Even a quick look at his work makes it clear that his excellent contributions to “appropriate technology” don’t preclude the occasional foray [...]
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Zero Geography reports on a real-time game using GPS devices which has – for our purposes, interesting applications for coordinating SAR or other response efforts. From Zero Geography: GPS Real-World Gaming in Hybrid Space. watch life as we know it online watch life as we know it online A real-time, multiplayer, GPS game for mobiles [...]
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The same messages can be communicated by signalling the letter "K" in Morse code via signal lamp. (While a proper signal lamp may be ideal, a flashlight, probably best employing red LEDs, will certainly fit the bill).
In Morse, the letter "K" is represent as Dash - Dot -- Dash.
The ICS also has a subset, the Medical Signal Code, which uses three-character phrases to communicate brief medical messages.