What are those black dome shaped thingys all over the ceilings in stores ?

Question

What are those black dome shaped thingys all over the ceilings in stores ?

Answer 1

cctv  to make sure ppl dont steal stuff lol

Answer 2

cameras but i heards ometimes there jus fake ones

Answer 3

They're covering security camera's.

Answer 4

Those are security cameras.

...Wait, are you planning on robbing a store?

-ponders how you didn't know what they were-

Answer 5

Security cameras.

Answer 6

those r cameras, they have like 8 in one, but y is this is beauty

Answer 7

like in walmart? those are security cameras

Answer 8

See those are the aliens checking out what humans do...oh wait you're serious aren't you...

Answer 9

is this a serious question, those are cameras silly.

:) they do that so it's not so obvious, and i think they move in 360 degree rotations.