If you were to randomly buy locks and install them, there is a chance that someone's key would let them go where they shouldn't. A master key system prevents such happenings.
A master key system assigns every key a unique biting that makes sure no unwanted access is granted. That same system also permits people who need common access to certain areas to do so without the need for a fist full of keys. It can also allow changing certain areas without having to re-key the entire complex.  If you have many and varied access issues or a high employee turnover you will want your locksmith to get you into a master key system. It will be cost effective in the long run. -Updated: April 22, 20002

  Can I "watch" my business when I am not there? 

Thanks to the internet and high speed connections (cable or DSL) the answer is now yes.
If you already have a surveillance system check with your installer or your local security expert (many Locksmith shops are gaining this expertise).  If you have a dial-up modem don't despair, you will be able to view the shop but not in "real time", in other words you will view a series of still shots. - Updated: April 22,2002

Who works on door closers? 

Locksmiths usually end up working on door closers since they also have to adjust doors to make the locks work correctly. Contact your local locksmith and they can help to direct you as appropriate. -Updated: January 11, 2002

When should I re-key my business?

Any time you feel the potential loss to the company would exceed the cost of upgrading you should seriously consider updating your system.  Red flags should be such things as removal of an employee who had keys, missing inventory with no evidence of forced entry, and the fact that you haven't updated the locks for a long time. -Updated: January 11, 2002  

How can I limit pilferage?

Depending in the amount of loss, you may want to consider monitoring (CCTV) systems, user logging, time limited access, and/or master-key control systems. Your local locksmith should be able to help you with cost and installation questions. - Updated: January 11, 2002