Here are the top questions I get asked.
Each question has the short practical answer behind it.
There are pages with more detail
The questions here are hyperlinks and will take you to the detail page, or you can navigate using the menu bar at the left.
Yes
Will a magnet or xray machine erase the card ?
No to a point.
How do you completely erase a card ? Is any data left after deleting files or formatting ?
Yes data can be recovered, the safest thing is to overwrite then reformat.
