[jwr]

The implementations of 3DSecure I've seen were so terrible that I'm not surprised there is a drop in conversion rates. I would consider the user interface and the massive breakage as actively user-hostile. The redirects, terrible UI with blurry crappy bank logos, ugly dialog, and then I have to copy the code from my phone. And incidentally, SMS is a particularly bad method of authentication.

[antaviana]

Especially when the code in the SMS is visible in the notification even if the phone is locked (at least in default phone configurations).

[sdooley]

Worth checking this out. Banks are actively working on improving the customer experience through 3DSv2 https://stripe.com/en-IE/guides/3d-secure-2

[arnvald]

That's true, I've had similar experience. Unfortunately merchants can't do anything about it, since the sites are provided by the banks.