Can UID be changed on Mifare 1K Card?
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.
如何制作串口-蓝牙一体式PN532
PN532作为史上最低成本RFID的硬件设备，是无法直接上电工作的，它需要在串口通信下传递数据，因此需要串口模块，那么所有串口通信的模块理论上都支持的，本文里接招制作一个带有USB串口和蓝牙串口的一体式PN532。
How to use NFC as a mifare card reader - Charge
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.
How to use NFC as a mifare card reader - Read
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.