dude, theres no need to force her to take a lie detector test.
all you have to do with women is get them drunk and then ask them questions.
when a chic is sh*t faced (note, not just buzzed of one beer, but fairly hammered) she will tell you everything about herself.
unfortunately though, most of the times that women are smashed so is the guy, so he isn't in the frame of mind to question her.
but if you really want to know all the deep darkest secrets of a chic, then all you gotta do is get her drunk (while staying relatively sober yourself). once she's three sheets to the wind ask her whatever you want. she'll answer honestly and won't even remember it the next day.
she might remember that you talked, but trust me, all the repressed sh*t she tells you (like the time she blew two guys at once) she won't remember telling you (the more repressed the thing she tells you when drunk, the less likely she will remember telling you the next day. just a wierd thing about the mind).