a Certificate issued to a Device that identifies the Device.
Note 1 to entry: All DeviceIdentity Certificates have the ProductInstanceUri as a subjectAltName.
Note 2 to entry: All DeviceIdentity Certificates are IDevID or LDevID Certificates as defined by 802.1AR.
Note 3 to entry: The ProductInstanceUri is the ApplicationUri when the DeviceIdentity Certificate is used to create a SecureChannel.