IEEE 1667 ("Standard Protocol for Authentication in Host Attachments of Transient Storage Devices") is a standard published and maintained by the

IEEE The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operat ...

that describes various methods for authenticating removable storage devices such as

USB flash drive Universal Serial Bus (USB) is an industry standard that establishes specifications for cables, connectors and protocols for connection, communication and power supply ( interfacing) between computers, peripherals and other computers. A bro ...

s when they are inserted into a computer. The protocol is universal, and thus operating-system independent. It is currently part of Windows Vista (SP2) and Windows 7, Server 2008, Server 2012, Windows 8, Windows 8.1 and Windows 10.

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