Abstract: A biometrics-based control device includes a biometric sensor that acquires biometric data from a person. A user database contains biometric data items, whereby a biometric data item characterizes an authorized user. A processor causes the biometrics-based control device to execute a control action if biometric data acquired through the biometric sensor corresponds with a biometric data item in the user database. The biometrics-based control device establishes a communication link with an external device through a communication interface. The biometrics-based control device applies an administrator authentication condition for allowing the external device to access the user data base if the user database comprises at least one biometric data item that belongs to an administrator class. The administrator authentication condition consists of an acquisition of biometric data through the biometric sensor that corresponds with a biometric data item in the user database that belongs to the administrator class.