Abstract: An electrical connecting device for the temporary connection of electrical or electronic circuits comprising a contact area and a contactor device. The contact area has a plurality of concentric zones of conductive material. Each zone is isolated from the other and a first electrical or electronic circuit is coupled to the conductive zones. The contactor device has a plurality of contacts so disposed that one or more contacts can be bought into engagement with the conductive zones of the contact area. A second electrical or electronic circuit is coupled to the contacts of the contactor device. The contact area can be mounted within a suitable carrier for attachment to an object to be identified. By placing the contactor device in engagement with the contact area, information can be read from or programmed into the first circuit by the second circuit which may comprise a data processing device.

Abstract: The ear tag comprises a male part having a stem with a head portion at one end, the head portion forming an external shoulder, and a female part with an opening through which the head portion can be passed. The area surrounding the opening forms a shoulder which engages with the shoulder formed by the head portion to lock the head portion in place. A hollow boss is formed with the female part and encloses the opening and head portion when it has been passed through the opening. A collar is located within the boss, this collar having an internal rim which abuts the shoulder of the female part. The collar is deformable to enable said head portion, when engaged through said opening, to pass the internal rim and become located with the collar such as to be retained by the collar within the boss.

Abstract: A label comprises a region in which are marked with intelligible items of information. Another region includes a semi-conductor circuit in which are stored data relating to the object to be identified. A device for putting the semi-conductor circuit in communication with a device of utilization includes a glove, a finger of which glove is provided with a device for establishing contact with the semi-conductor circuit.