A friend recently trashed his laptop but claims a technician told him his digital pictures could be recovered from the camera's memory card - including deleted pictures. Is this correct? I am about to sell a camera with a CompactFlash card. What are the options for wiping it? Andy Whitehouse
Yes, deleted pictures can often be recovered from memory cards. When it comes to deleting them permanently, cards vary, so see if any instructions came with the card, or check the manufacturer's website. Otherwise, several of the picture-recovery programs provide a "secure erase" feature that writes (say) a zero to every memory cell. Examples include Zero Assumption Recovery, Lexar Image Rescue for CompactFlash cards, and Image Recall 3.