Hibbs explains it all.

Over at Newsarama, Hibbs talks more about the POS system in the store:

"I’ve only been using POS for two weeks now; and only the one system, so nothing I say on the topic should probably be granted that much weight, really, but I can already see how this is going to transform the way that I operate my store, my ability to properly order things that have fallen “off my radar”, my accidents in double or triple ordering some material, my access to data for customer searches and special orders, and so on. If I can enact even half of the efficiencies that POS promises my store should quickly become that much more efficient and profitable."

It's not necessarily that easy, though. Go and read why.