An improved follower packing unit for a grease gun is disclosed. There is provided a method for automated statistics collection comprising determining a likelihood that statistics for data have changed; and collecting statistics for data in response to the likelihood. The system also buffers the video programming while paused, permitting a user to replay missed portions of the video programming. An anisotropic conductive sheet of the present invention can be advantageously used in an electronic device or inspection apparatus, used for an operation test, as a contactor.