The PN532 is an NFC chip that we can connect to a processor like Arduino to read and write NFC cards, communicate with mobile phones, or even act as an NFC tag. It is a widely used integrated circuit in all kinds of .2. Everything with NFC involves an application for responding to the tag. Whether that is a "special tag reading application" depends on your own personal definition of "special tag reading application". For example, some browsers will support NDEF-formatted tags with .