Hardware signer are cool but unfortunately have poor scalability for the masses (cost, shipping logistic, mobile usage). I would aim for multisign/Frost solutions.
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TapSigner /Satchips are good for the masses IMO.
Cheap and mobile compatible.
Screens are a bit of an overkilling feature and necessary only for bigger amounts.
Basically when you move your long term savings, with a private key that you will use only few times a year
+1
app + server + encrypted cloud backup 2 of 3 frost could be nice
My @npub17tyk...3mgl was cheaper than my physical leather wallet
We are talking here about Nostr, hardware signer would require a totally different (easier and convenient) user experience.