A system for providing a user with access to an information site hosting information with controlled access, such as an e-Learning content provider. The antennas of the antenna system are closely separated, e. Consequently they are difficult to process as waste material. The design information is modified according to a first user input. Moreover, CTS2SELF operation can be employed alone or in conjunction with power savings operation of co-located radios within a communication device. 5 gcm3 and ii) abrasive grains having pores.