Security devices are used to protect property and people from theft, vandalism, and other forms of harm. A peephole is an 8-letter device that allows a person to see who is outside the door without opening it. A PADLOCK is a 7-letter device that is used to secure doors, gates, and other items. A LOCK is a 4-letter device that is used to secure doors, windows, and other items. A CAM is a 3-letter device that is used to record video or audio. A HASP is a 4-letter device that is used to secure doors, gates, and other items. An ALARM is a 5-letter device that is used to alert people of an intruder or other emergency. A SENSOR is a 6-letter device that is used to detect motion or changes in the environment. A spycam is a 6-letter device that is used to record video or audio without being noticed. A burglar ALARM is a 12-letter device that is used to alert people of an intruder or other emergency.