20. The processor-based method of claim 17 , further including triggering an alarm on the basis of a triggering condition relative to a comparison result between two behavioral vectors of behavioral indicator values or relative to a calculation of a new behavioral indicator.
17. The processor-based method of claim 16 , further including determining a number of multi-dimensional behavioral vectors for behavioral indicator values the multi-dimensional behavioral vector including a vector indicative of at least one of traveling activity, movement activity, music consumption activity, or sleeping activity.