What type of scanner specifically identifies fingerprints for verification?

The correct response is a biometric scanner, which is specifically designed to identify and verify unique physical characteristics of an individual, such as fingerprints. Biometric scanners are used in security systems to authenticate users by comparing the scanned fingerprint against enrolled fingerprint data. This technology relies on the uniqueness of fingerprints, ensuring that each person's print can be accurately matched or differentiated from others, making it a reliable form of personal identification.

Other types of scanners listed serve entirely different purposes. A smart card reader is primarily used to read information from smart cards, which contain embedded chips for storing data, typically for access control or payment systems. A barcode reader is designed to read barcodes, which are graphical representations of data used to track inventory or product information rather than individual biometric traits. A virtual network interface connects virtual machines to networks, focusing on data transmission rather than physical identification methods. Thus, the biometric scanner is the only option that aligns with the need for fingerprint verification specifically.