Hello Kan,
Thanks for your answer, but I fear that your explanation leaves things still in the dark.
In a JCOP card, or in principle any JavaCard, as long as you have the necessary keys and rights it's possible to download additional applets and afterwards use them.
Is there a possibility, in the default unmodified SE050 that you could get from any official distributor, to download additional applets?
I'm not talking about adding NXP propietary applets (such as a MIFARE applet), but possibly other functionality, programmed by us.
Thanks in advance