PIR sensor module questions

I just have some general questions about PIR sensors. I bought this one: RadioShack.com Official Site - America's Technology Store

Can they track moving objects? I know that they sense a change in background IR, being able to tell if something moves in a controlled environment. But does it have any way to relay information on that object, like its trajectory? Or at least what side of the "eyeball" it is?

In this video Jeri Ellsworth explains how to interpret the output of a PIR sensor:

(See 5:45 into the video for information about motion direction)