Few simple and effective available free resources for generating rMQR code generation and decoding.

The following site supports online rMQR, MicroQR, QRcode generation. The source code also available in Github. It is based on RUST  implementation

You can try to encode your message into a barcode at  HERE

Python based rMQR code generation implementation is available for online generation

You can try it at HERE

This site provides multiple type barcode generation. You can generate rMQR, MicroQR, QRcode, tQR, EAN13, EAN8, UPCA, CODE39, CODE93, NW7 and ITF type of barcodes. This site also provides image decoding or camera decoding.

Qrean wasm demo

Terry Burton's post script based barcode generator supports plenty of barcode types including rMQR code.

You can try the online barcode generator HERE

SMARTPHONE SCANNER:

currently few smartphone apps available for decoding the rMQR. The official Denso site suggest the following app. It is available for both iOS and Android version.

The android version is available from Google Play

The iOS version is available from the App Store

This App can scan using smartphone camera or photos and images stored in your gallery.  This App expects much higher border around the code to decode.

The other App which supports for smartphone is Scandit

The DEMO version available for Android and iOS

The Scandit Demo app supports the rMQR by selecting ANY CODE option on the GUI of the main screen. This app just scans and displays the result and we can copy the scanned message. But the DEMO app doesn't capable of generating the code.