I been though X-ray scanners with cameras and many rolls of film carried by hand and never had any problems with fogging.
As for memory cards, I have a 256MB Secure Digital card and memory card reader/writer handy about four inches from my monitor all the time, except when in use elsewhere, and the card hasn't been affected in any way.
The same goes for CD and DVD media - no magnetic influence possible.
You seem a little rude,I asked a simple question and you,re reply was not an answer,I could ask if cars where safe and you could reply millions travel in cars,but that dose not mean they all arrive safely,nuff said.:-[