W!K!

The Magic Mifare Classic 1K card has not only changeable UID but also full backer door command support. When we write error data to the magic card cards, they also can be no response or dead. Here's the tutorial to fix the Magic Mifare Classic Card.

Depending on the Firebase of MTools, only 15% of MTools users have used Sniffer functions of MTools. It's really a easy tools for comparison and analysing. In this article, I'll show the tutorial of how to use Sniffer in MTools.

A lot of guys want to clone their access card, so they buy more mifare 1k card to copy to. But after the package received, what they found is that block 0 of sector 0 can not be modified. The answer is NO to general MIFARE 1K Card.

CRC - Cyclic Redundancy Check is widely used in data transition. According to wikipedia.org, A CRC-enabled device calculates a short, fixed-length binary sequence, known as the check value or CRC, for each block of data to be sent or stored and appends it to the data, forming a codeword.

Many people are curious on how to clone access card for convinience or just for fun. Most access system with RFID verify visitors with UID in the access card. It's the first 4 bytes hex data of Block 0 in Sector 0.
Follow the steps bellow to clone an access card.

The last post shows how to use MTools to read money data on Sector 3.
Here's the tutorial to show how to charge mifare 1k card with regular rule on 2 blocks.

NFC has been widely used on Android Pay, Apple Pay and Device Connection.
With NFC on Android Phone, it's even easy to read datas in the mifare card, such as Metro Card, RFID Parking card and etc.
This article shows how to use NFC as a mifare reader to read the amount remaining in the card.