Are there cameras that can follow your movement?

Update: Pretty creepy as i find, I've seen surveillance cameras that can follow your movement, I even heard of cameras that can zoom in on your face, and identify who you are. Those kinds of surveillance cameras i heard of actually reside in hospitals, airports, etc,..is there really technology out there like this? is... show more Pretty creepy as i find, I've seen surveillance cameras that can follow your movement, I even heard of cameras that can zoom in on your face, and identify who you are. Those kinds of surveillance cameras i heard of actually reside in hospitals, airports, etc,..is there really technology out there like this? is this a form of artificial intelligence? if it is, I'm pretty spooked to know that a computer cameras is watching me.
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