This is an Explorer Application for working with MIFARE Ultralight EV1 NFC tags. You can read the complete content of the tag, read and increase the 24-bit counters, protect the data by setting Lock Bits, write data to the free user memory and use a memory protection on base of a 4 bytes long password.
One thing that would be a nice implementation, would be the ability to choose whether you want to;
Write the data as HEX or ASCII: Currently, you have 16 Characters that you can write, and it'll translate that to the Hex Equivalent.
What I think would be nice, is if I wanted to write the HEX directly, for items that do not translate to ASCII in this format.