A device for transporting hollow bodies, includes: —at least one element for grasping a hollow body, the element including at least one cam follower (30A) made of an electrically conductive material; —at least one fixed cam (32) which is intended to engage with the cam follower (30A), the cam (32) being made of an electrically conductive material; —a contact layer (34) which is made of an electrically insulating material and is interposed between the cam (32) and the cam follower (30A); characterized in that the cam follower (30A) is connected to a first electrical signal (P1) whereas the cam (32) is connected to a second electrical signal (P2), a member (36) being positioned so as to detect electrical contact between the cam follower (30A) and the cam (32).