A system for detecting an object approaching and touching a capacitive touch device, said system comprising - said capacitive touch device, - a processor, - an optical system connected to said processor and arranged to collect first information on said object, said capacitive touch device being connected to said processor and arranged to collect second information on said object, said processor being arranged so as to execute the following functions: - classify the object as a triggering object or as a non-triggering object based on said first information from said optical system, - classify the object as an unknown object, if said object has not been classified as a triggering object nor as a non-triggering object based on said first information from said optical system, - classify the unknown object as a triggering object or as a non-triggering object, based on said second information on said object from the capacitive touch device, wherein - if the object is classified as a non-triggering object, disable the execution of touch functions of the capacitive touch device at the latest when at least a part of the object touches the capacitive touch device, said disable being performed at least in the zone of contact between the capacitive touch device and the non-triggering object, - if the object is classified as a triggering object, at the latest when at least a part of the object touches the capacitive touch device, execute a predetermined function on said capacitive touch device depending on said first and/or second information. - said capacitive touch device, - a processor, - an optical system connected to said processor and arranged to collect first information on said object, said capacitive touch device being connected to said processor and arranged to collect second information on said object, said processor being arranged so as to execute the following functions: - classify the object as a triggering object or as a non-triggering object based on said first information from said optical system, - classify the object as an unknown object, if said object has not been classified as a triggering object nor as a non-triggering object based on said first information from said optical system, - classify the unknown object as a triggering object or as a non-triggering object, based on said second information on said object from the capacitive touch device, wherein - if the object is classified as a non-triggering object, disable the execution of touch functions of the capacitive touch device at the latest when at least a part of the object touches the capacitive touch device, said disable being performed at least in the zone of contact between the capacitive touch device and the non-triggering object, - if the object is classified as a triggering object, at the latest when at least a part of the object touches the capacitive touch device, execute a predetermined function on said capacitive touch device depending on said first and/or second information. - classify the object as a triggering object or as a non-triggering object based on said first information from said optical system, - classify the object as an unknown object, if said object has not been classified as a triggering object nor as a non-triggering object based on said first information from said optical system, - classify the unknown object as a triggering object or as a non-triggering object, based on said second information on said object from the capacitive touch device, wherein - if the object is classified as a non-triggering object, disable the execution of touch functions of the capacitive touch device at the latest when at least a part of the object touches the capacitive touch device, said disable being performed at least in the zone of contact between the capacitive touch device and the non-triggering object, - if the object is classified as a triggering object, at the latest when at least a part of the object touches the capacitive touch device, execute a predetermined function on said capacitive touch device depending on said first and/or second information.