SANTA CLARA, Calif.--I've been seeing demos of credit cards with rewritable magnetic stripes since I started covering start-ups in 1998, but it appears that Dynamics is going to be the first company to actually get this technology into the hands of consumers. At Demo Fall 2010, I saw a quick (and, to be clear, incomplete) demo of two kinds of credit cards that can have their magnetic stripes rewritten on the fly.
First, CEO Jeffrey Mullen showed a two-accounts-in-one card. The user could press a button to switch the card from one account to another. Second, he showed … Read more