Modern wearables have long since ceased to be just pedometers, becoming full-fledged multimedia centers on the wrist. NFC-In Xiaomi devices, this feature is implemented with the specifics of the ecosystem, offering users not only contactless payment, but also access to digital passes and cards.
Many owners buy trackers without even realizing the hidden potential of the built-in near-field communication chip. NFC operates at 13.56 MHz and provides secure data exchange at distances of up to 10 centimeters. This is a fundamental difference from Bluetooth or Wi-Fi, which guarantees the security of transactions, since an attacker will not be able to read data remotely.
In this article, we will look at exactly what the technology offers in the Mi Band and Amazfit watches, how to activate the feature correctly, why it may not work in your region, and what alternatives exist for residents of different countries.
Principle of operation and difference of other communication technologies
Near Field Communication is based on electromagnetic induction, which allows devices to communicate without the need for pairing in the usual sense. When you bring the clock to the terminal, the reader creates an electromagnetic field that induces current in the antenna of the gadget, and this is the current that powers the chip to transmit the encrypted payment token.
Unlike in the QR-codes that require the screen to be turned on and often unlock the device, NFC-Payment is instantaneous and invisible, so you don't have to search for an app, open a camera, or wait for the interface to load, but just hold your wrist to the terminal, and the transaction is initiated.
⚠️ Attention: Don't confuse NFC s RFID-Although the frequencies may coincide, encryption protocols for payment systems (EMV) It is much more complicated and requires certification from banks.
It’s important to understand that Xiaomi’s Card Emulation is used in a device that pretends to be a plastic card for the terminal, meaning that the smartphone itself can be in your pocket at the time of payment, or even turned off if the token is already loaded into the watch’s memory.
Supported models and module availability
Not all of the Chinese giant’s activity trackers are equipped with a payment chip; manufacturers often release versions of devices with and without the prefix “NFC” and they may be identical on the surface; the absence of a logo on the box or in the specification often indicates a stripped-down functionality.
Among the popular models that received support for the technology, stand out Mi Band 3 NFC, Mi Band 4 NFC, Mi Band 5 Global Version, as well as the newer Mi Band 6 and 7. In the line of smart watches Amazfit (sub-brand ecosystem), this feature is even more common, starting with the models Bip and GTS.
You can check for the module software through the Mi Fit (or Zepp) application. If the device profile menu does not contain the "Mi Pay" or "Card" option, most likely, the hardware in your version of the watch is not soldered.
Configure and activate the NFC function
The initial setup process requires a stable connection to the smartphone, and you need to make sure that the phone has all the necessary security updates installed, as payment tokens require up-to-date certificates.
To start the work, perform the following actions:
- 📱 Open the Mi Fit app and go to the profile of the connected device.
- 💳 Find the "Mi Pay" or "Banking Cards" section in the Watch Management menu.
- ➕ Click "Add card" and follow the instructions on the smartphone screen.
- 🔐 Go through verification through SMS orapend.
Once linked, the card data is encrypted and uploaded to a secure memory area of the watch, from which point onwards no internet connection is required on the gadget or phone itself.
☑️ Checking before setting up
Sometimes the process can be interrupted due to a server timeout, in which case it is recommended to restart both devices and try again, making sure that the antivirus on the smartphone does not block the connection.
Using NFC to Pay for Different Regions
Xiaomi’s payment functionality is limited by licensing agreements, and Mi Pay is officially fully operational in China and several European countries, and users from Russia, Ukraine and other CIS countries often cannot directly link local bank cards via a standard menu.
But that doesn't mean that the module is useless. In some regions, you can emulate public transport maps, and you can top up a virtual map of a transport app through the menu of the clock and pay for the fare by simply putting your wrist up against the turnstile.
| Region | Payment by card | Transport maps | Affordable services |
|---|---|---|---|
| China | Full support | Supported | Mi Pay, AliPay |
| Europe (EU) | Limitedly. | Depends on the country. | Google Pay (via WearOS) |
| Russia/CIS | Not supported | Partially (Moscow et al.) | Transportation, access keys |
Wear OS watch owners (such as the Xiaomi Watch S1 or Watch 2 Pro) are in a better position to use Google Pay, which supports most of the world’s banks’ cards, bypassing the watchmaker’s own regional restrictions.
Alternative scenarios for the module
Even if direct payment is not available in your area, the near-field chip is being used in other areas, and one of the most useful features is emulating access keys, and you can program a watch to open an electronic lock in an office, hotel, or smart home.
How do you copy the access key?
It's also used for fast pairing, and in some smart home scenarios, touching a certain label for hours can trigger scenarios like turning on a light, playing music, or waking up a TV. NFC-marker.
⚠️ Warning: Do not attempt to use a watch to clone your pass cards to work without permission from the security administrator.Some access control systems may consider this an attempted hack and block your original pass.
Another scenario is fast communication of contacts or links, and if you touch a friend’s phone clock, you can instantly transfer your number to them if both devices have the corresponding sharing feature (Android Beam or analog).
Security issues and data protection
The security of financial transactions is the first priority for Xiaomi developers, because when you pay, it is not your real card data, but a one-time token that is transferred, and even if a hacker intercepts the signal, he will not be able to reuse it or restore the card number.
In addition, most watches require unlocking (pin code input or phone confirmation) before the first transaction after removal from the wrist.
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For maximum security, install an automatic screen lock in the Mi Fit app immediately after the watch is taken off, which will prevent unauthorized payment if you lose the gadget.
However, it is worth keeping digital hygiene: do not connect to public Wi-Fi networks at the time of card binding and regularly update the watch firmware, as updates often contain security patches.