Couldn't find the exact card, but here's an example from my neighbors if anyone's interested. I guess it's not a thing everywhere yet.

https://www.swedbank.lt/img/private/d2d/cards/3dSecure/816x2...

_edit_

They dropped the requirement in 2018

https://www.mastercard.com/news/press/2018/signing-off-maste...

Got a new mastercard (debit) without signature field and a mastercard (credit) with embossed numbers and signature field. It makes sense with the debit/credit split.