Write the password (4bytes) and the pack (2bytes) in the special pages of the tag. Instead if your tag is protected or You want to enable the authentication I developed the functions for Mifare Ultralight EV1 (for now) If Your tag is not protected You can use the functions above as are. Page contains the 4 pages read starting from the offset specified in the previous property Get the Type of Mifare Classic and Mifare Ultralight Get the UID of Mifare Classic and Mifare Ultralight With this new extensions I added some functions and updated of old ones. apk the first time You approach a Mifare Tag to your device a pop-up wil ask You if You want to use the default NTAG Info app or our MifareInfo (or your project), You must select MifareInfo (or your project) otherwise when You approach a Mifare Tag the intent will not go to our app Before to start write data is good to read this document to understand how Mifare Tag works So You must pay attention to write data in the correct block or your Mifare Tag could become unavailable. Not all the blocks are equal in a Mifare Tag, every sector has blocks for user data and a block called sector trailer, here are stored the authentication key and the access bits. If You write less than 16 bytes the extension add 0 tho the remain bytes The data to be written must not be greater than 16 bytes, HEX format. The Mifare Tag must be near the Android device. Write the Block specified (after the authentication) with a number between 1 and the number of blocks minus 1. The extension calculate the Sector to authenticate Read the Block specified (after the authentication) with a number between 0 and the number of blocks minus 1 The Mifare Tag must be near the Android device Provide the Key A necessary for the Mifare Classic Authentication after this it is possible Read or Write a block if the Key is correct and has the permission to do it. True to read a block, false to write a block Provide all the info data of the last Mifare Tag approached The following events work when You approach a Mifare Tag to your smartphone with the app opened: The extension have some events and property and functions here a small explanation.

In this version I have added some feautures: This is the new version of my MifareInfo extension.

Mifare classic type of keys