Then don't issue an app. Issue people cards to pay with and let them come to the bank for weird transactions.
That'd be great, if your goal was to hemorrhage customers.
Go find a bank without an app.
This 100%. I don't understand why everything needs to be an app nowadays. Some things are best done in person and without to technology. No, I won't install some shitty app that requests location and network access to order lunch. If a venue does not provide a paper menu and accept cash, they have just lost my custom.
You can even use the chip on the card together with some cheap HW device to authorize the transactions made with the app. This actually exists [1] for quite some time but seems to be mostly limited to Germany. But this and the use of other HW tokens systems is on decline. Banks increasingly use apps now, increasingly without any meaningful second factor, not even offering better options. They want this and are fully to blame.
[1] https://en.wikipedia.org/wiki/Transaction_authentication_num... (This is a bit outdated, nowadays it works via QR codes instead of those flickering barcodes but the concept stays the same)