A device including a case including a first housing demarcating a first accommodating volume designed to receive a PDA phone; a data capture module configured to capture data from the tag of the object; connection means configured to electrically connect the data capture module and the PDA phone; the device being remarkable in that the case includes a second housing demarcating a second accommodating volume, and in that the data capture module is arranged inside the second housing, in the second accommodating volume.