If you stay in the zone too long or fail the mini-game, your "Suspicion Meter" spikes, causing the NPC to turn around or the alarm to trigger instantly. The Reward:
Stay vigilant. Change your codes. And never, ever look away when typing your secret. american fugitive steal the passcode
While there is no single mission titled exactly "," you are likely referring to the Safe House/Bunker or Heist missions in American Fugitive If you stay in the zone too long