Psi Sense

Skill: Psi Sense (Per/Hard).
You can sense nearby psionic activity. This is a passive sense,
though it can also be used actively, if you suspect you may have
missed something. The GM rolls against your skill (minus
range penalties, p. B550) whenever anyone near you uses
or is the target of psi. On a success, you are aware of it.
Note that Psi Sense does not allow you to follow up with
a psionic ability of your own; it is not a “targeting sense.”
At level 1, you only know that something psionic is
going on nearby. Level 2 gives you the direction to the
nearest use of psi and allows you to follow-up with a sec-
ond skill roll to determine which ability is in use. Level 3
also gives you the distance, precisely narrowing down
where the user or subject is. Level 4 lets you know which
ability is in use (automatically); a follow-up skill roll tells
you whether you’re picking up the psi or the subject.
Statistics: Detect (Psionic Activity; ESP, -10%; Reflex-
ive, +40%; Vague, -50%) [8]. Further levels remove Vague
[13], then add Precise, Nontargeting [22], and then Ana-
lyzing [32].