Smart-Locksmith Old Hickory: If you want any type of service which related to secure locks & keys so call us now, our locksmith person will reach your location and solve your issue. Are you Locked out of your house, vehicle or premises? Lost your one and only car or house key? Moved to a new home and want the locks changed ? We are providing 24 hours 7 days of the week service in Old Hickory. We are ready to resolve all of your problems at your location in less than 30 minutes.