After playing GS4 I decided that:
MAGATAMA > BRACELET
Both as a plot device and a game device!! SOOO much better to present evidence and cross-examine people outside of court than it is to point out some guy's sweaty armpits >_> (and get no penalty even if you guess wrong)
So which magical-truth-seeking device do YOU prefer?
(also made this a LONG time ago, but didn't post it until now...)