Which technology relies on unique biological markers for identification?

Biometrics is the technology that relies on unique biological markers for identification. This includes various physical and behavioral characteristics, such as fingerprints, facial recognition, iris patterns, and even voice recognition. Biometrics takes advantage of the fact that these traits are unique to each individual, allowing for reliable identification and authentication.

In practical applications, biometrics enhances security systems by ensuring that only authorized individuals can gain access to certain areas or services. For example, unlocking a mobile device with a fingerprint or using facial recognition at an airport for identity verification are common uses of biometric technology. This characteristic of being unique to each person makes biometrics particularly powerful for secure identification purposes.

Other technologies listed, such as cryptography, firesafety systems, and network security systems, do not specifically utilize unique biological markers. Cryptography focuses on securing information through algorithms and keys, while firesafety systems are designed to prevent and respond to fire hazards, and network security systems aim to protect data and resources on a computer network. These technologies have distinct purposes and mechanisms that do not involve biological identification.