The invention relates to a method and apparatus for requesting data from one of a plurality of servers. In the environment change sensing mode, the capsule camera is operated in a very low power mode by configuring the image sensor to use a small region of interest or a high sub-sampling ratio. One or more control signals are provided to the input buffer, e. The UE further encapsulates desired component UDP packets into Internet Protocol packets, and may assign component-identifying values to fields of the IP packets. This can be obtained by introducing a second passivation layer on top of the in-situ SiN-layer, in combination with cleaning of the in-situ SiN before gate deposition and before deposition of the second passivation layer.