A thermal imaging camera can expose your ATM personal identification number (PIN).
Here’s how …
The coolest button is the one you pressed first, through to the hottest button being the one you presses last. Less than 4 numbers exposed? Then one of the hottest buttons was likely pressed more than once, now you need only unscramble the sequence).
My advice: When done with your transaction, punch in another random six numbers to leave heat signatures on key numbers not necessarily included in your real PIN!
Read the whole story here Stealing ATM PINs with thermal cameras