3 ms·
I had no idea that SIM cards executed code. I naively assumed they just contained hard-coded information, similar to a credit card. The fast that they execute J
by conroy 13y ago
I had no idea that SIM cards executed code. I naively assumed they just contained hard-coded information, similar to a credit card. The fast that they execute Java applets blows my mind.
- pygy_ 13y agoAFAIK, all smart cards (including credit cards) contain a microcontroller. [0] https://en.wikipedia.org/wiki/Smart_card https://en.wikipedia.org/wiki/Smart_card