The page I'm linking to includes a video where two scammers distract the checkout clerk and the third takes *maybe* one second to install a credit card skimmer on top of the existing transaction device. He then double checks it, taking another second or two.
Incredible...and incredibly scary.
http://gizmodo.com/it-takes-these-brazen-thieves-just-seconds-to-install-a-1765447063
