A waste recovery station for a beach cleaner for recovering waste raked up by a beach cleaner. An instruction which is performed firstly, out of the first user instruction and a second user instruction for turning on a communication unit of the other communication apparatus, is determined. A write pole is adjacent the near-field transducer and include a first portion having an edge extending towards the air bearing surface at a non-orthogonal angle with respect to the air bearing surface. The first participant is identified as the first identity if the first confidence level is above a first threshold.