This paper summarizes some recent progress and future perspectives in the
experimental investigation of the Standard Model (and physics beyond it) using
charged kaon decays, except for the important mode K+ -> pi+ nu nubar discussed
in detail in other contributions to this workshop.Comment: Invited talk at the Workshop on e+e- in the 1-2 GeV range, Alghero,
Italy, September 2003 (eConf C0309101). 5 pages, 3 figures. Added and
corrected some reference
