1) ATM card skimming involves criminals attaching devices to ATMs to steal card information from the magnetic stripe, while PIN capturing uses cameras to film customers entering their PIN. 2) Skimming and capturing devices can be disguised and hidden in various areas of the ATM like the card reader slot, keyboard, or fascia panels. 3) Criminals typically attach the devices for short periods when ATMs are unused to steal card data and PINs, which are then used to withdraw money from victims' accounts.