It is very important to evolve a system by which a record of all keys to the office is kept. This record includes particulars of the individuals who are authorized to draw keys as also a record of actual withdrawal and deposit of the keys with date and time along with signatures of the persons issuing and drawing/ depositing the keys.
Duplicate keys should be kept sealed and in the protective custody of one or more nominated employes. A record should be kept of issuing and drawing of the duplicate keys with reasons.
Key register should indicate the regular and actual time of deposit of the key. If a key is not deposited back by a user within a reasonable time, say 30 minutes, inquiries should be instituted and action taken accordingly.
In a place like bank, the keys should not at any time be left with unauthorised personnel or just left in the desk or unattended elsewhere.