You can, you need to do this 'bunker' thing (you need to use the + option thingum to make a bunker then paste that)
Discussion
I hope nostr:npub1syjmjy0dp62dhccq3g97fr87tngvpvzey08llyt6ul58m2zqpzps9wf6wl implement nostr connect so we can can login using Amber just clicking on a qr code, like how login flow on https://following.space/ works.