Assuming you sign your cards, what pen do you use? A cashier last week made me sign my card (first time in years) and I used one of her Sharpies she lent me. Worked great so far and hasn't smeared even in the slightest. I decided to pick up one of those Sharpie pens (Sharpie Fine Point pen) for myself. Signed one of my debit cards and just in case I let it dry for awhile, but it still smeared (and badly) later on. What kind of Sharpie did she have? I then tried a Uniball gel ink, also bad idea. Regular Bic pens last longer, but still smear over a prolonged period of time. Any suggestions for the "best credit card signing pen"?