Lock-codes were used on both the exterior and interior entrance-ways of buildings. Some doors were programmed with double-lock codes. Lock-codes were used, for example, on the security doors of Granta Omega's Blackwater Systems facility on the outskirts of Falleen Throne, capital city of Falleen, before the Clone Wars. Some of these doors were double-coded. A lock-pad was the input device for the lock-code, typically found on the entrance-ways themselves.