BarcodeBC > Articles > How to Add a QR Code to a Vue-Based PWA that Can Be Scanned by an NFC Reader?
To add a QR Code to your Vue-based PWA that can be scanned by an NFC reader, you can follow these steps.
1. Generate the QR Code: You can use a QR Code generator library or API to create a QR Code from the data you want to encode. There are many options available for different programming languages, such as JavaScript, Python, Java, etc.
2. Add the QR Code to your PWA: Once you have generated the QR Code, you can add it to your Vue-based PWA. You can do this by adding an image tag to the HTML of your PWA and setting the source attribute to the URL of the QR Code image.
3. Set up the NFC reader: To read the QR Code using an NFC reader, you need to make sure that the reader is set up correctly and is able to recognize QR Codes. Depending on the type of NFC reader you are using, you may need to install drivers or software to configure it.
4. Test the scanning process: Once everything is set up, you can test the scanning process by holding the NFC reader in close proximity to the QR Code. The reader should be able to recognize the QR Code and decode the data it contains.
5. Use the decoded data: Once the QR Code is scanned and the data is decoded, you can use it in your PWA as needed. For example, you could display the data on the screen or use it to trigger other actions in your PWA.
As far as I know, there is no way for a PWA to directly suppress NFC functionality on a device. NFC is a hardware feature that is controlled by the device itself, and not by web applications or PWAs.
However, there are some potential workarounds that may help you achieve your goal. One approach could be to use a foreground detection mechanism to detect when the user's device is close to an NFC scanner. When the device is close enough to trigger NFC, you could pause or disable any QR Code functionality until the device is no longer in close proximity to the NFC scanner.
You could also prompt the user to disable NFC before scanning the QR Code, or provide instructions on how to temporarily disable NFC functionality on their device. However, this approach may not be ideal, as it requires manual intervention from the user and may be seen as cumbersome.
Ultimately, the best solution may depend on the specific use case and requirements of your application.
Q: The trouble I'm having is that if NFC payment is enabled when the phone is placed near the scanner, it's also close enough to the NFC reader, which brings the payment app to the foreground, and so the QR Code is hidden and can't be scanned.
1. You can try disabling the automatic launch of the NFC payment app when the phone is placed near the scanner. This can usually be done in the settings of the payment app or in the NFC settings of your phone.
2. Alternatively, you can consider using a different type of QR Code that can be scanned from a distance, such as a large or high-density QR Code barcode. You can also experiment with different placements of the QR Code, such as placing it at an angle or using a different surface material that doesn't interfere with the NFC signal.
3. Another option is to use a different type of wireless communication technology, such as Bluetooth or WiFi, to transmit the payment information to the scanner. However, this would require additional hardware on both the phone and the scanner, so it may not be a practical solution for all situations.