Black Box, by Jennifer Egan 

Never look for hidden cameras: the fact
that you’re looking will give you away.

Determine whether your Designated Mate
seeks physical intimacy; if not, feign the
wish for a nap.

Your pretense of sleep will allow him to
feel that he is alone.

Curling up under bedclothes, even those
belonging to an enemy subject, may be
soothing.

You’re more likely to hear his handset
vibrate if your eyes are closed.