What Does Shared Key Authentication (SKA) Mean?

Shared key authentication (SKA) is a verification method in which a computer or terminal uses the Wired Equivalent Privacy (WEP) protocol to access a wireless network. It pre-establishes that a requesting system has knowledge of a shared secret key required for authentication.

Techopedia Explains Shared Key Authentication (SKA)

Shared key authentication (SKA) is not considered a secure method of granting network access because it uses conventional unsecured channels, like writing and verbal exchange, to share a security key for granting access.