Beware of Hotel Magnetic Card Door Openers
Ever wonder what is on your magnetic Hotel room key card?
Answer:
a. Customer's name
b. Customer's partial home address
c. Hotel room number
d. Check-in date and out dates
e. Customer's credit card number and expiration date!
When you hand them back to the front desk your personal information is there for any employee to access by simply scanning the card in the hotel scanner. An employee can take a hand full of cards home and using a scanning device, access the
information onto a laptop computer and go shopping at your expense.
Simply put, hotels don't erase the information on these cards until an employee reissues the card to the next hotel guest. At that time, the new guest's information is electronically 'overwritten' on the card and the previous guest's information
is thus erased. But until the card is rewritten for the next guest, it usually is kept in a drawer at the front desk with YOUR INFORMATION ON IT!
The bottom line: Keep the cards, take them home with you, or destroy them. NEVER leave them behind in the room or room wastebasket, and NEVER turn them into the front desk when you check out of a room.
For the same reason, if you arrive at the airport and discover you still have the card key in your pocket, do not toss it in an airport trash basket. Take it home and destroy it by cutting it up, especially through the electronic information
strip!
OR,
If you have a small magnet, pass it across the magnetic strip several times. Then try it in the door, it will not work. It erases everything on the card.
Information courtesy of: Metropolitan Police, London.