At HT Locksmiths we keep no copies of any customers keys. All the keys we duplicate are returned to the customer along with all duplicates at the time of duplication. Our coded high security and master key cylinders that require a specific code to duplicate may, at the customers request, be stored (code only) for the purpose of ordering replacement keys as required by the customer. These 'codes' are only stored on hard copy, and are locked aware in a cabinet at our premises. Any codes are kept in a separate location from any machines capable of creating keys.