if you mean the machine in 2000ad,
you can get past it simply by assigning 2 different button to 1 key
ie. lets say you key assignment is like this:
L :keyboard X
R :keyboard C
A :keyboard A
change it so L & R is assign to the same key(lets say X)
so when you're to enter the pass. ,press X + A and voila,you can continue the game now.
don't forget to change it back
you can get past it simply by assigning 2 different button to 1 key
ie. lets say you key assignment is like this:
L :keyboard X
R :keyboard C
A :keyboard A
change it so L & R is assign to the same key(lets say X)
so when you're to enter the pass. ,press X + A and voila,you can continue the game now.
don't forget to change it back