Zoo key

A Zoo key is a large novelty key used to activate talking storybooks at American zoos. These were used by various zoos, largely in the latter half of the 20th century, as part of a system which played audio recordings describing exhibits. The keys were typically made from brightly-colored plastic in the shape of animals, although some zoos issued the keys in non-animal shapes.


A Zoo key is a large novelty key used to activate talking storybooks at American zoos. These were used by various zoos, largely in the latter half of the 20th century, as part of a system which played audio recordings describing exhibits. The keys were typically made from brightly-colored plastic in the shape of animals, although some zoos issued the keys in non-animal shapes.
Read article on Wikipedia