I am reading about all the travel everyone does on this forum and thought this info might be good. I am a financial crimes investigator and I went to a fraudulent document training class last week. I was told that SOME hotels put your financial information on the back of your key card. This includes name, credit card number, address, etc. So, if you are travelling, it would be better to be safe than sorry and keep your card to just shred when you get home. Now just for good measure, I checked the info out on www.snopes.com and they are reporting it is false. But the guy teaching the class is an expert in the matter and I spoke with him today. He said there are documented cases and again said that SOME hotels do this. I now know the source of the theft for some of my cases based on this info, so I believe it. The info on Snopes is about year old and technology changes every day. Again, this is FYI only so you decide!