House keys are small metal objects used to unlock doors, providing access to a home. They are typically cut to fit specific locks, ensuring that only authorized individuals can enter. House keys can come in various shapes and sizes, often featuring a unique pattern that corresponds to the lock they operate. In addition to traditional metal keys, there are also electronic house keys, which use codes or key fobs to unlock doors. These modern alternatives offer added security and convenience, as they can often be programmed to allow temporary access for guests or service providers, enhancing the overall safety of the home.