WPA Key or Security Key: This is the password to connect your wireless network. A network security key is a technical term for your WiFi password. The network security key is a kind of network password or the passphrase in the form of physical, digital signature or biometric data password that. The network security key is better known as the Wifi or Wireless network password. 5 days ago · A WEP key is a security password (key) for WiFi-enabled devices.