miniExtensions

Create a <a href="https://miniextensions.com/miniextensions-form-for-airtable/" rel="nofollow noopener noreferrer" target="_blank">miniExtensions Form</a> for updating records.

Add <a href="https://miniextensions.com/prefill-hidden-fields-in-miniextensions-form/" rel="nofollow noopener noreferrer" target="_blank">prefill values</a> to your form's URL (e.g. prefill_checkbox=checked)

Convert those form <a href="https://miniextensions.com/qr-code-generator/" rel="nofollow noopener noreferrer" target="_blank">URLs to QR codes</a>.

Turn ON the auto-submit feature for your form (after testing and making sure it's working correctly)

1. Create a <a href="https://miniextensions.com/miniextensions-form-for-airtable/" rel="nofollow noopener noreferrer" target="_blank">miniExtensions Form</a> for updating records.
2. Add <a href="https://miniextensions.com/prefill-hidden-fields-in-miniextensions-form/" rel="nofollow noopener noreferrer" target="_blank">prefill values</a> to your form's URL (e.g. prefill_checkbox=checked)
3. Convert those form <a href="https://miniextensions.com/qr-code-generator/" rel="nofollow noopener noreferrer" target="_blank">URLs to QR codes</a>.
4. Turn ON the auto-submit feature for your form (after testing and making sure it's working correctly)

Now every time a QR code is scanned, it would update its corresponding record in Airtable.

<a href="https://docs.miniextensions.com/en/articles/4876649-how-to-use-the-phone-camera-to-scan-a-qr-code-and-open-a-specific-record-in-airtable">How to use the phone camera to scan a QR code and open a specific record?</a>

<a href="https://docs.miniextensions.com/en/articles/4876652-how-to-look-up-a-record-by-using-the-qr-code-scanner-in-miniextensions-form">How to look up a record by using the QR code scanner in miniExtensions Form?</a>

- <a href="https://docs.miniextensions.com/en/articles/4876649-how-to-use-the-phone-camera-to-scan-a-qr-code-and-open-a-specific-record-in-airtable">How to use the phone camera to scan a QR code and open a specific record?</a>
- <a href="https://docs.miniextensions.com/en/articles/4876652-how-to-look-up-a-record-by-using-the-qr-code-scanner-in-miniextensions-form">How to look up a record by using the QR code scanner in miniExtensions Form?</a>

It needs to be fast enough on mobile that you could use it for check-in for a large event, a concert for example.

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