A card device is adapted to accept a load packet for an applet and to process and apply to the load packet an INSTALL command in order to prompt an installation of an instance of the applet in the card device. The INSTALL command is adapted to set up in the card device an application identifier comprised in the loading package that relates to the instance of the applet to be installed. The INSTALL command is adapted to install the applet instance while considering the application identifier and to set up in the card device at least one further application identifier that relates to the same instance of the applet.