A fact from Quadro Tracker appeared on Wikipedia's Main Page in the Did you know column on 28 February 2010 (check views). The text of the entry was as follows:
Did you know... that the Quadro Tracker detection device, which was advertised as being able to detect drugs, weapons, explosives, alcohol, missing people, precious metals, dead pets, and lost golf balls, was denounced by the FBI as a fraud?
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And their money are easily parted.
Just looking at the purported abilities of this 'device' must have triggered alarm bells in the would-be users 'brain'.
