NFC (Near Field Communication)  uses short-range radio wavs to let two devices "talk" to each other when they are very close (a few centimeters). One device (like your phone) creates a tiny magnetic field. The NFC sticker (also called a tag) doesn't have battery - it gets powered wirelessly from the magnetic field. Once powered, the tag sends back its stored data to the phone.

In Our Warranty System

• Your phone writes data (product ID + dates) to the NFC tag using these short‑range signals.

• Later, when tapped again, the phone reads the data back from the tag.

• All of this happens in less than a second — like magic, but it’s really radio physics.

Key Points 

• Works only at very close range (a few cm) → secure

• No battery needed in the sticker → lasts for years

• Same technology as tap‑to‑pay credit-cards 

Q. Do I need a special device to use this?

A. No. Your phone with our app can read and write NFC labels

Q. What if the customer loses the product box?

A. No problem! The warranty is always stored in the NFC label itself

Q. Can I change the warranty dates later?

A. Yes, you can update the record through the app anytime.