Probe head assemblies, components of probe head assemblies, test systems including the probe head assemblies andor components thereof, and methods of operating the same. The sensor array has an active side at least one sensor on the flat active side configured to detect a particular form of energy. Access to the information carrier can be made conditional to a successful authentication, in particular by encrypting user-information 20 present in the information carrier, and thereby providing a strong copy protection scheme. The container is placed in an outer container and is compressible by a compression device in order to feed product out therefrom through a nozzle.