Hello sir, this is Fabian from customer support.
TagInfo and Tagwriter are applications for test purposes. There isn't any level of security in these apps
We highly recommend to design your own application using Android's or iOS APIs for the Secure Elements.
We do provide a API for RFID tags called Taplinx but, keep in mind that this is only an SDK for PCD and PICC interfacing. The security of the keys aren't part of Taplinx SDK.
Best Regards,
Fabian
