A Sniffer?

According to a report published in the November issue of the journal of the American Chemical Society, researchers at Georgia Institute of Technology have "fused" biotechnology and microelectronics."

The report, published by Reuters, quoted William Hunt, a professor of electrical and computer engineering, as having used cocaine antibodies. The antibodies react to cocaine, and the reaction can be electronically detected.

Sniffer has been warned not to try barking when this sort of packet is intercepted... You can chat to Sniffer here.

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