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Aparently there’s a U.S. Special Information Tone signal for a dead phone line, and robot callers (telemarketers, debt collectors, etc.) listen for it, then remove the “dead lines” from their lists. Record it at the beginning of your answering machine messages to make (some) robots stop calling you! [via] Link.

(Photo by Flickr user scriptingnews)

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Becky Stern

Becky Stern is head of wearable electronics at Adafruit Industries. Her personal site: sternlab.org


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