A considerable number of CP violation measurements require the most possible accurate knowledge of the flavour at production of the reconstructed B meson. The performance of different flavour tagging methods will be measured from control channels. One of the possible tagging methods that can be used is the one known as SameSidekaon. In this note we present how to calibrate the response of the tagging algorithms using the data and combine the result with the so called OppositeSidetagging. Also trigger and selection effects are briefly discussed