I have a cochlear implant; the external headpiece has neodymium magnets in it. Sometimes when it starts raining suddenly, I toss the external bit into my pocket

I have a cochlear implant; the external headpiece has neodymium magnets in it. Sometimes when it starts raining suddenly, I toss the external bit into my pocket or my messenger bag to keep it from getting soaked (and losing my hearing). What I'm getting at is that the magnets have ruined my credit/debit cards several times, so I wouldn't consider this a "myth" at all.