________blank scanning devices use fingerprints and iris scanners to identify individuals.Multiple ChoiceVisualBiometricOpticalVirtual

Break Down the Problem

1. Identify the type of devices used for identification.
2. Determine which option corresponds to the use of fingerprints and iris scanners.

Relevant Concepts

• Biometric Devices: These devices use unique physical or behavioral traits for identification, such as fingerprints and iris scans.
• Visual Devices: Typically refer to devices that capture images or video but do not necessarily involve identity verification.
• Optical Devices: Generally involve light and vision-related technologies, but not specifically for identification.
• Virtual Devices: Often relate to digital simulations and environments, not relevant to physical identification.

Analysis and Detail

• Among the choices provided, "Biometric" directly refers to devices that utilize biological characteristics, specifically fingerprints and iris scans for identification purposes.

Verify and Summarize

There is clear differentiation between the categories. Biometric devices are the only ones that utilize physical traits for individual identification. Hence, the chosen term accurately describes the function of the scanning devices mentioned.

Final Answer

Biometric