The present invention relates to acylated indanyl amines according to the general formula wherein R1\u2013R4 have the meanings given in the description, A is CH2, CHOH or CH\u2014, B is CH2 or CH\u2014, and R5 is an aryl or heteroaryl group, possibly substituted by the substituents listed in the description. Locating includes broadcasting a query to all the archive units; identifying a set of the archive units that could contain a result for the query; receiving at least one query reply from the archive units; and validating the query reply when the archive unit that sent the query reply is in the set. A transmission data frame comprising a first sub-frame including at least a portion of the pedalling data is formed, and the transmission data frame is outputted for wireless transmission.