Dynamics Inc presents PoweredCards.com (Credit card technology)

Press a microswitch and the card changes to the other number and reprograms the magnetic strip.

Another version of the card displays 5 digits of the credit card only if the password entered on the microstrip is correct.

The boot rep said their studies showed that people would tolerate credit card protection only if it slowed down the process by less than 2 seconds.
They said their cards could not stop sophisticated hacking but "80% of fraud is simple fraud" (pen and paper).