Ken Hawkins, director of the site GiftCardTracker.com, says he has spotted scratch-and-sniff gift cards in the past.

FORBES: Magazine Article

It was able to adapt the microencapsulation techniques used to make, for example, scratch-and-sniff perfume advertisements and carbonless copy paper.

ECONOMIST: Showing off

Director John Waters sent up the concept by having scratch-and-sniff cards passed out with tickets at his 1981 film, Polyester.

FORBES: Flops

There's even talk of creating a scratch-and-sniff magazine insert.

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