Security devices are tools designed to protect people, property, and information from unauthorized access or harm. Common examples include alarms, cameras, and locks. These devices help deter crime and provide peace of mind by alerting homeowners or businesses to potential threats. In addition to physical security, there are also digital security devices like firewalls and antivirus software. These protect computers and networks from cyber threats, ensuring that sensitive information remains safe. Together, these devices play a crucial role in maintaining safety in both our physical and digital environments.