Abstract: This invention provides locking devices that can be opened by alternate users with different keys. The devices generally include a lock slider anchored to an anchor tab through one or more link sliders. The sliders can be slidably mounted to a slide mount, such as, e.g., a slide shaft or slide slit in a housing. When the anchor tab, link slider and lock slider are all shackled together with, e.g., two or more padlocks, the lock bolt of the lock slider is substantially immobilized with the device in a locked configuration. When one or more of the shackles is removed, the lock slider is free to moved to an unlocked position along the slide mount.