Worked for a multinational company and security division always cautioned us to not leave the room key card behind in the US or abroad. Instead take it with you when you leave and destroy it later. They said the cards contained personal and credit card information that did not need to fall into the wrong hands.
This^^^^^^
That is an old wive's tale.
No it's not actually.
But look at the trash can if you get a chance, lots of stuff gets printed out and tossed without being shredded by the front desk and is easy pickings anyway.
