This could be the answer to the column/plinth idea, without using perspex sheets. It combines ideas of travel and freedom of movement, one of the issues closely related to the opening of the Wall, as well as restrictions and authority. It would compromise the sense of time I would like to create by using an archived display with perspex, but would creates a frame and physical space with direction.
The top section (control unit) could host Mac minis, hang screens, and the electricity cable coming off from the base of the gate.
Dimensions of walk-through metal detector gates
The control unit should hold over 10kgs (Mac minis 1.37kg × 2, screens 3.5kg × 2, 2 perspex sheets, cables).