Apple, Blackberry, Dell, HP, Lenovo, Motorola, Panasonic, Sony, Toshiba and other consumer electronics companies can be less unsustainable than their competitors and less unsustainable tomorrow than they are today. However, given: The state of the art in manufacturing, Electronics are made with designs that are supplanted before they wear out, and Recycling consumer electronics is [...]
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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.