What looks like the card slot from a Chase Bank ATM is actually a sophisticated card skimmer removed from a branch in West Hills, California. And police believe a 3D printer may have been used to create it.

Those green bulbous card slots that were supposed to make it very difficult for a card skimmer to be attached to an ATM have turned out to be just a minor inconvenience for sophisticated thieves. Investigators believe this skimmer—which perfectly fits over the ATM's regular slot— was created from a mould that came from a 3D printer. Which means those behind this particular ATM scheme had some very expensive tools at their disposal.

In addition to being a perfect replica of the ATM's standard card slot, this skimmer incorporates a small pinhole camera that starts recording the PIN pad whenever a card is inserted. On the underside is a series of holes that investigators believe allowed the thieves to download data and footage, but the complex electronics on the inside may have been salvaged from a cellphone, giving this skimmer wireless connectivity. So in the future, like in many situations, make sure you take a good look at the hardware before you stick your thing in the slot.