Jack starts to prod at the keypad, relieved to have won back some of his enthusiasm for the task. They're actually on the right track. They could be out so very soon.

...There's no obvious panel to pry off, and nowhere to cram in an autohack. That's a bad sign. Still, he gets the head of his wrench into a likely spot and starts to lever away at the panel, trying to get it--

ZZZAP!

With a shout of pain, he snatches his arm back and drops the wrench. It clangs loudly off the metal floor. Forcing his way in was maybe a bad idea.