Nor is there a lame Knight-Rider bar of lights to signal your speed.

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Splunk is driving a bar chart by processing a signal from his circuit breaker every few seconds, and sure enough, the electrical usage went down by the same percentage that he turned the rheostat down.

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Most indices produced some type of doji or hammer bar to give active traders a signal that some type of rest is due.

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But instead of that being a bearish signal, it might just have created a low enough bar for the usual beat rates.

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They could be used to make cheap radio-frequency identity tags in essence, printable bar-codes that transmit an identifying code in response to a pulsed radio signal.

ECONOMIST: Just press print