I went turkey hunting on a ranchers land and during discussions he said he was the owner of a company manufacturing these "Key Cat's". They appear to be an interesting item; reportedly they have been reviewed by the head of the TSA, and are approved to be in a person's carry on luggage.

It's aimed at the feminine market; someone has them for sale on E Bay for $14.95 and $3.00 shipping. What do you think?
Shotgun