No, but it's an interesting scenario that could make for a good discussion. I imagine that a PC putting a NPC under could be played reasonably easily, but it might cause some problems the other way around.
I'm not sure just how effective involuntary hypnosis is in reality, but that's another issue, related to your game's rating on the cinematic scale.
It touches on something I raised in another thread recently (can't remember where) about the lack of a willpower stat in Traveller and the problems that created for the GM in making PCs do something they didn't want to do - such as falling for feminine charms. I imagine a similar system would handle both situations, but I haven't a clue what that system could be. Any ideas of your own?
I read a good idea the other day about using torture to make PCs talk. Too many PCs would have unrealistic bravado - 'bring it on, I've got plenty of hit points and I'll get em back after a night's sleep anyhow'.
The system proposed there was 'talk or roll', where a d66 table of potential consequences is handed to the player, and if they choose not to talk, they roll on the table. Consequences include permanent reduction of characteristics, loss of limbs and faculties, etc, which will have to be roleplayed in future games.
Faced with the prospect of running a weaker character, players find themselves in a real dilemma about revealing what they know.
I'm not sure yet if a similar system could be used for other 'willpower' situations.