Slits or Slots?

#1
Anyone know what the slits or slots are next to the ignition switch? They were on my Pontiac and I do believe there in every car now and I never have figured it out. It is just more curiosity on my part.
 
#2
I assume you mean the three vertical lines on the dash, right behind the ignition and beside the stereo right?
I believe that's a microphone for bluetooth on your stereo.
Even if your car doesn't have the bluetooth capability I think Toyota still cut the slots in the dash as standard.
 
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