Electric multi-contact system with key having insulating zones

A multi-contact system comprising a housing delimiting a cavity configured to receive at least an encrypted portion of a key, the encrypted portion of the key having an encryption section formed at least in part by an electrically conductive material, the housing comprising a plurality of electrical contacts on an inner surface of the cavity intended to make contact with the encryption section of the encrypted portion of the key when said key is in an inserted position in the cavity of the housing, said electrical contacts being connected to a computing unit configured to communicate with an effector, the multi-contact system being characterized in that the encryption section of the encrypted portion of the key comprises electrically insulating zones, the multi-contact system being configured to form, when the key is in the inserted position in the cavity of the housing:

• an open switch for each of the electrical contacts located opposite an insulating contact zone of the encryption section of the encrypted portion of the key formed by one of the insulating zones;
• and
• a closed switch for each of the electrical contacts which is in contact with a conductive contact zone of the encryption section of the encrypted portion of the key outside these insulating zones, the conductive contact zone being electrically conductive.