SimplestBitcoinBook on Nostr: Anyone have an answer to this? Thanks in advance! #[0]

Anyone have an answer to this?
Thanks in advance!

quoting
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For apps, Is there a way to use a key signer extension such as Nostore instead of directly inputting a private key?

Don’t understand enough about apps to know if safe to enter my privkey, just know I don’t want to do so in a browser