Porte-Clé-siffleur

An ordinary looking key ring attachment, Q-branch made some clever audio-actuated modifications to the Philips keyfinder. When armed, the first bar of 'Rule Britannia' would cause the keyfinder to eject a concentrated stun gas to disorientate an enemy. Bond's keyfinder was also packed with explosives primed to blow when activated by his personalised signal - a wolf whistle. Skeleton keys which could open 90% of the world's locks also came attached to the keyfinder.