Prabhuji_swayam Over the years, NFC has been used for a number of different purposes, but it’s most commonly used for mobile payments. When you tap your Android phone to a terminal to use Google Pay, NFC is what enables that payment to happen. The credit card information is securely communicated over the very short distance.
NFC can also be used to wirelessly transfer data between devices, though this isn’t a very common use-case anymore. One of the coolest things you can do with NFC is utilize programmable tags. NFC tags can be small stickers or little keychain accessories, and you can customize what happens when you tap your phone on one. So lots of customization possible here.
Personally I use it to allow people how are visiting me, to quickly join my Home WiFi network without manually sharing the credentials.