Maybe kiosks at the gate that allow passengers to check out eVUs while waiting for flights, then taking them on board.

After the flight they can return them to the plane or at a kiosk at the other end, making the eVU not just something for the flight.

This would add value to the eVU to entertain while passengers wait, as well as while they fly.

Long layovers hence become more palatable, thanks to e.Digital.