Warnings about magnets and gadgets have been passed down like tech folklore, often without much explanation. The reality is more nuanced: some electronics are genuinely vulnerable to magnetic fields, ...

Magnets are found all over the place. They hold items on the refrigerator while also holding the door shut. Our banking cards have magnetic strips — as do speakers, motors, and automatic doors.

I was recently gifted a charming, kitschy magnet, and as I tucked it into my wallet for safekeeping, I couldn't seem to remember: Do magnets spell doom for credit cards? Many of us have held onto ...