Key chains are simplest and most important accessories even for the geekiest kind who swear on password protected locks, and it is no wonder some geek designer from Japan has come up with key chains inspired by forever popular star wars characters Darth Vader and R2-D2 the droid that too complete with their characteristics – sound of Darth Vader’s breathing and R2-D2’s light emitting eyes.  These effects are enough to scare people away in the dark using simple key chains…