[tehjoker]

I figure the serial number could be enough if it was linked to a credit card purchase. However, it might only link to a lot number that a store purchased.

[some_random]

I don't think stores are tracking the serial numbers of the printers they sell, so yeah at best you're gonna get a big list of everyone who bought that SKU in the approximate time. And if you buy it with cash, or secondhand, then they're screwed.

Now, it probably phones home and that's probably how they catch people but there are ways around that.