You can partially do that with amber on Android.
It’s an app designed to keep your NSEC safe.
This includes clients that let me do this with other services, so @primal or @damus letting me click the link and sign in those to login to a service like nostr:nprofile1qqsfhc97plq8j4yzxv33v98yu8hunu5tpkeesqg7lmk0qhl9wrja6vctqe3n6 . I want to be able to do this with any client I use. This is such a huge UX improvement over the traditional web, and making this method easy to implement and widely available is about the lowest hanging fruit I could imagine right now for making the Nostr experience a step above the crap we deal with on the web today.
Like this is so stupid obvious to me that I almost want to fund development to make this really, really easy to use for any website or app. Don’t even know what that would look like… but I’m genuinely considering it.
Any client with your keys could basically become a secure signer for your entire web experience.
Discussion
I'm confused how this is different from Amber bunkers at all. For nostr apps on either android or desktop, I use amber to login (or more generically, to sign events).
Don't have my mobile? Not signing any events. Not logging in.
I think the primary difference is the implementation he mentioned is native to a client / app login authorization, whereas amber is more like an Authenticator app.
It’s the difference between login with Facebook vs Google / Microsoft Authenticator.
There’s similarities but also slight differences.
Login w/ Facebook is "legacy auth" like "hey meta, is this person legit, yes or no?" Horrible.
We're past that with nostr's more simple and less-abusable "who are you?" auth.
I guess my real question here is: is it really impossible to develop an amber-like app on ios for e.g. a single device user? Or is it just that no one's done it?