This device was used in the spy movie "Thunderball" about British secret agent James Bond.

VOA: special.2009.01.14

Stern also recorded months of conversations, wearing a secret device when talking to Smith about getting taxpayer funds for the real estate deal, which was a bogus concoction of the Federal Bureau of Investigation.

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Before we go any further let me remind you what the E-Cat is: It is a really cheap device that consumes hydrogen and nickel and through the agency of some secret catalyst (hence the device name) produces copper and lots of heat.

FORBES: E-Cat Proof Challenge: $1,000,000 is a "Clownerie"? (Updated)

The secret of the Duke device is a spherical lens, a design first proposed in the late 19th century.

WSJ: Next Cameras Come Into View