JavaCard OS

As shown on the J3D081 card description page, the default ATR is 3B F9 13 00 00 81 31 FE 45 4A 43 4F 50 32 34 32 52 32 A3.

If I buy some J3D081 cards , would you please help me change the ATR?

Yes, we can change ATR for you.

You can leave the message about your specific requirement on the shopping cart page or tell us directly at javacardos@gmail.com.