  We introduce the public computer code HiggsSignals, which can be used to test
the predictions from models with arbitrary Higgs sectors against experimental
measurements. Following a brief description of the code, several examples of
HiggsSignals applications are given. We derive constraints on extended Higgs
sectors taking into account the measured rates for the observed LHC Higgs
signal in all available channels. The results are presented both in a
model-independent framework with coupling scale factors that parametrize
deviations from the Standard Model, and in a model-dependent example where we
analyze a specific benchmark scenario of the minimal supersymmetric standard
model.
