Locksport is for lock enthusiasts and hobbyists.

From Wikipedia: Locksport is the sport or recreation of defeating locking systems. Its enthusiasts learn a variety of skills including lock picking, lock bumping, and a variety of other skills traditionally known only to locksmiths and other security professionals. Locksport followers enjoy the challenge and excitement of learning to defeat all forms of locks, and often gather together in sport groups to share knowledge, exchange ideas, and participate in a variety of recreational activities and contests.

Philosophy

At the core of locksport is the philosophical belief in responsible full disclosure. Locksport enthusiasts target security through obscurity that is common within the locksmith industry, as well as among lock manufacturers. Those who choose to participate in locksport often seek to discover security vulnerabilities and notify lock manufacturers as well as, in some instances, the public, in an effort to promote improvements in the field of physical security and to aid consumers in making better, more informed decisions about their own security.  This philosophy is contradictory to that held by many locksmith organizations, and locksport enthusiasts have come under attack for releasing information about lesser-known vulnerabilities. Nonetheless, locksport enthusiasts persist in discovering weaknesses in all forms of physical security.

Activities

At locksport meetings, members regularly participate in a variety of activities such as lock challenges, lock relay races, standardized tests, and many other such activities dreamed up by the members themselves.
One such activity is known as the Padlock Challenge, where members each start with a predefined number of padlocks linked together. As participants pick a lock, they attach the lock to the chain of padlocks of another participant. The goal is to be the first to rid oneself of all one's locks. Another common activity is some form of speed challenge, where members are given a limited time to pick a lock, or compete for the best time on one or more locks.