Do "Gold ATMs" take deposits too?

I was reading about the “Gold ATM’s” that actually dispense gold (Au) that are now in a few countries, and am wondering if they actually operate as a broker of gold, buying and selling, or if they just sell. I’m guessing that deposits, if accepted at all, would need to be verified in the lab before your account got credited, or are you stuck trying to sell the gold in the ordinary way? If they do buy, do they only buy back their own ingots, or are they a full-service gold dealer?

Looks like it just vends coins and bars.