A Restricted Key System utilizes patent protected keys and lock cores to restrict access to you building/complex and stop unauthorized duplication.
The special patented keys are only available to approved agents (i.e. you won't find them at the local shoe repair shop) and details about who is authorized to have them duplicated are recorded by your locksmith.
Aria Lock Service will not cut a duplicate key without a letter/order signed by one of the Signatories for your system. This gives you complete peace of mind, knowing that you know exactly who has your keys.