@voorstad as @MRTN in the dutch language thread noticed, this work came to fruition - Triodos Bank app - #35 by MRTN
It was very much sought after, quite the belated end of year present by microG/marvin, maybe /e/ funding.
Mind, the linked commit in the thread implements the qrcode/barcode scanning of both mlkit and older vision api, not face recognition that some banking apps (Tridos itself?) require.