Electronic Locking Systems
Electronic security systems including electro magnetic locks, key pad entry, proximity readers, solenoid bolts and electric release systems or strikes for use in access control and electronic locking applications.
http://www.electriclock.net/

Comated Edilizia S.p.A.
Italian manufacturer of double-locking wedge clamps, self-locking spring clamps, anchor systems, couplers and other accessories for the construction market.
http://www.comated.com

Napco Security Systems, Inc.
User-friendly, code-free 8 to 64 zone hybrid system, with intelligent exit/entry technology that slashes false alarms
http://www.napcosecurity.com/

Intelligent Locking Systems
Intelligent Locking, Manufacturers of electronic locking systems for access control and total traceability of managed products, material and tools.
http://www.intelligent-locking.com

Key-Less-Locking Mechanism
Knollan is a startup company that has completed the development of a very innovative locking mechanism. This mechanism is suitable for all kinds of locks, and for any security level, while offering many additional advantages over existing locks. The Knollan mechanism resembles the idea of a combination lock, but it is unique and entirely different from any existing locking device. It has many special features that lead to commercial strengths, if not market superiority, over existing locking mechanism.
http://www.knollan.com

U.S. Meter Fit Corporation
Manufactured Gas By-pass locking Meter Sets in various sizes ranging from 1.5 million cfh. to 23 million cfh. Products have three locking valves allowing the ability to proof meters without losing service and avoiding re-lights.
http://usmeterfit.com

Locking Systems International Inc.
Locking Systems International Inc. supplies custom built cam locks, switch locks, gaming locks, vending locks, padlocks and OEM locks.
http://www.lockingsystems.com

The "Double-Checked Locking is Broken" Declaration
Details on the reasons - some very subtle - why double-checked locking cannot be relied upon to be safe. Signed by a number of experts, including Sun engineers.
http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html

Secure Industries Inc
Distributor of locking systems and door furniture with an online catalog.
http://www.secureindustry.com/

Real Locks & Security Co., Ltd.
Manufacturers of a range of locking systems for export and use with OEMs.
http://www.reallock.com