I had a computer repair instructor who insisted that you shouldn't put a magnet too close to a CD-ROM, or you'd erase it. Like, mind, this person *taught computer repair.*
@gilhova@ed1conf I worked in a library that used Tattle-Tape (magnetic strips) for security. Books with CD-ROMs had a big warning sticker flagging them for exemption from the security system.
@gilhova@ed1conf Perhaps he was used to magneto-optical discs (common in Europe but never caught on in North America) which looked simillar and were sensitive to magnets.
@gilhova @ed1conf I worked in a library that used Tattle-Tape (magnetic strips) for security. Books with CD-ROMs had a big warning sticker flagging them for exemption from the security system.