what is a nfc tag reader

An NFC tag reader is a device that can read an NFC tag. NFC stands for Near Field Communication, which is a wireless communication technology that allows devices to communicate with each other when they are in close proximity, typically within a few centimeters. NFC tags are passive data stores that can be read and, under some circumstances, written to by an NFC device. They can be placed virtually anywhere, with no need for any type of power source, and can be custom encoded by their manufacturers or use industry specifications. NFC tags can be used for a variety of purposes, such as triggering home automation or giving people access to a businesss Wi-Fi. An NFC tag reader provides power to the NFC tag that its reading and communicates wirelessly with the tag. When a tag is brought within range of the reader, the reader generates an alternating magnetic field, which induces an electric current in the tags coil, allowing the tag to send data to the reader in the form of electromagnetic pulses. NFC tag readers can be used for a variety of purposes, such as reading credit or debit card information, personal identification numbers (PINs), or interacting with an NFC-enabled soccer ball. NFC tag readers can be built into smartphones, such as the iPhone, and can be used to automate tasks or interact with real-world objects.