Chris Tarnovsky, the owner of Flylogic Engineering spoke to Wired about some of his Smart Card Hacking techniques. It involves lots of dangerous acids to burn off some of the protective layers so it isn’t a DIY project. He is able to probe a data bus on the chip and read or inject information! Below is an image from his blog that shows another chip that has been modified to expose all 8 data bus lines. It shows that no mater what type of security is implemented there are methods of circumventing it.

Via: Hackaday