Can't upvote enough.

EDIT: Find out what frequencies they use. Turn it on sporadically when she's trying to talk. That would be against the law, though.

Are they encrypted in any meaningful way? Could they be hacked to do the following?

Speech Jammer Among 2012 Ig Nobel Winners https://www.youtube.com/watch?v=PV1cpjdOGnQ

Can't upvote enough.