That's different, that's web. And for that it uses Alby, nosx, Flamengo etc. The question is, does their desktop app support locally installed key signers?
Discussion
Wouldn't that be remote signer option?
No, a remote signer is usually a piece of hardware, like the one from lnbits (https://shop.lnbits.com/product/nsec-remote-nostr-signer )
This is using nostr connect though, right. Pretty sure that's the same method as the remote signer login option.