Sets timer

A pair of ubiquitous Big Bro security cameras were set in the ceiling of
the lobby, constantly scanning back and forth across the room for any signs
of intruders. Jensen hesitated behind a low planter and watched the sweep
patterns for a few moments, waiting for the brief moment when the cameras
slipped out of synch with one another. Chancing the use of his cloaking aug
would be too risky – the lobby was long and he’d need to be fast, risking
disruption of the invisibility effect. Timing was the key.

Jensen blink-set a countdown clock in the corner of his optic display, and
when the numbers began falling, he bolted from his cover. Without missing
a step, he ran to a spot beneath the first of the cameras just as it swept back
toward him. Another count of three more seconds before it moved away
again, and Jensen sprinted the rest of the distance, barely making it into the
corridor beyond as the second monitor looked his way. The camera caught a
glimpse of black coat-tail, but he was in.

- Deus Ex: Black Light, Chapter 8 pgs. 149-150