When they do open the display case, they will find a terminal that's already switched itself on! The terminal is a foot wide and looks like it can be removed from its holder. The screen shows a field of stars, but soon turns light green with simple red letters that read:

"To access this terminal, your choice is a simple one: A or B.

"Answer correctly, and you may proceed.

"Answer incorrectly, and you may not live long enough to regret it."

Then two buttons appear onscreen, one with a bright A on it and a B on the other, and wait for one to be pressed.