[VadeRetro]

In addition, cat states are more sensitive to disturbance than other types of superpositions, a potentially useful feature in certain forms of quantum encryption, a new method for protecting information by making virtually all eavesdropping detectable.

This works in a cool way. You basically send your message via pulses of cat-state particles of which each is entangled with a particle you are NOT sending. If the cat-state of your stay-at-home particles collapses too soon, some eavesdropper has sensed your message along the way.

[The Red Zone]

Cat Burglars beware.