It's a quite straightforward use - few minutes, it uses NFC to the passport, it's very organized and well guided... except

you can use only one bank card per person - the payment would be rejected w/o any reason given, so going through the process few times to no avail. Getting visas for the family would require multiple bank cards.

This is a common problem. I have it everywhere I go when I take my kids on holiday. Particularly ticket machines where you have to buy multiple tickets and can't add more than one to a transaction (Maltese buses are a good one).

I don't get the problem with my credit card. Might just be switching cards until you find one that isn't crap.

I encountered this on the NYC subway trying to buy 4 metrocards with one credit card. No bueno.

Indeed, it could be a common issues. Some places transposition systems even allow use of bank cards as 'ticket'

Yeah I'm in London so that's what we use here. But a lot of the European transport systems just chuck it through as a single transaction so if you buy three tickets it looks like repeated attempts to transact and is blocked.

Athens is another one that got me last year.

Funny - both London and Athens were in my mind when I wrote the comment.

I'm guessing this is your card bouncing a repeat purchase from the same vendor with the same value

That I'd not know, although it'd be very uncommon and has not happened. In the EU 3ds is a very standard process, the the payments require an explicit approval (national id cards/smartid, etc.)

Yeah weird, I've seen some vendors reject the purchase even after a successful 3ds validation, looks like something in the vendor/payment processor (rather than the bank) side

3DS also requires a smartphone app, at least at my bank

I guess you could create a few virtual cards and use those.

Did it recently, took 3min to receive confirmation, the warning it might take longer than on the app is bollocks.