Host station including: - means for communication with a first electronic component (520, 530), said first electronic component having a "first" identifier, said first identifier conforming to a predetermined convention, identifiers according to said convention comprising a "common" part, common to electronic components of the same family, and a "unique" part specific to each instance of an electronic component in the same family, - means for communication with at least one second electronic component, said second electronic component having a "second" identifier, said second identifier conforming to said convention, and the common part of said second identifier being different from the common part of said first identifier, said first and second electronic components belonging to one and the same portable electronic entity, the host station being characterized in that it furthermore comprises: - means for determining at least one electronic component communicating with said host station and possessing an identifier conforming with said predetermined convention and whose common part is different from the common part of said first identifier, the second electronic component thus being one of the determined electronic components; and - means for verifying a pairing according to a predetermined rule of the unique part of said first identifier with the unique part of said second identifier, said verification being aimed at ensuring that one of the electronic components has not been illicitly replaced with another within said same portable electronic entity, said pairing determining the progress of the execution of an application, - means for executing said so-called "dependent" application and means for submitting an execution of a part at least of said dependent application to said verification of said pairing. - means for communication with a first electronic component (520, 530), said first electronic component having a "first" identifier, said first identifier conforming to a predetermined convention, identifiers according to said convention comprising a "common" part, common to electronic components of the same family, and a "unique" part specific to each instance of an electronic component in the same family, - means for communication with at least one second electronic component, said second electronic component having a "second" identifier, said second identifier conforming to said convention, and the common part of said second identifier being different from the common part of said first identifier, - means for determining at least one electronic component communicating with said host station and possessing an identifier conforming with said predetermined convention and whose common part is different from the common part of said first identifier, the second electronic component thus being one of the determined electronic components; and - means for verifying a pairing according to a predetermined rule of the unique part of said first identifier with the unique part of said second identifier, said verification being aimed at ensuring that one of the electronic components has not been illicitly replaced with another within said same portable electronic entity, said pairing determining the progress of the execution of an application, - means for executing said so-called "dependent" application and means for submitting an execution of a part at least of said dependent application to said verification of said pairing.