Wii U

Pretty old.
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Let's Blocking:
http://i270.photobucket.com/albums/jj88/Debug_Mode/sf3_2.png

If you want to do a quick test to verify what everyone in this topic has been saying, point a camera at the sensor bar while it's powered on and you can see the infrared lights. You should see 5 on each side so it looks something like this:
*_***_*_______________*_***_*

The pattern of lights is what allows it to pick up on orientation as well. It can use a point from the left and a point from the right to figure out the position of the remote and where you're pointing it (that's why people can get the pointer to work with 2 candles) but the extra points allow it to also tell if it's tilted so you can rotate the cursor on the screen.

edit: I can see where the confusion might come from, by the way. We keep calling it a remote. The shape of the controller was specifically chosen to remind people of the remotes for their TV and other devices. And those remotes all emit rapidly blinking sequences of infrared light that a detector on the device picks up on and interprets as a command if the sequence follows the correct pattern that the device has been programmed to accept. That's not how the Wii remote transmits data though. It actually uses Bluetooth wireless technology.

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"This ain't like fieldwork. You never have to notarize a man and kill him in triplicate. Well... Almost never..." - Ruby

Yeah, sorry to break your discovery TC, but the "sensor bar" isn't actually a sensor at all. The infrared cameras are in the end of the Wiimote, not in the bar.
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Steam Name: gekganon