Google patents a throat tattoo with a built-in lie-detecting mobe microphone

Maybe your boss (or spouse?) will want you to wear it:

And then there’s the lie-detector feature. “Optionally,” the filing muses, “the electronic skin tattoo can further include a galvanic skin response detector to detect skin resistance of a user. It is contemplated that a user that may be nervous or engaging in speaking falsehoods may exhibit different galvanic skin response than a more confident, truth telling individual.”

There is more information here.  The pointer is from Charles C. Mann.