Build the universal key store, with adaptors for every kind of key one could want. Even better, a BIP-39 standard to generate all of those keys.
Then I won’t need yubikeys anymore, or a ColdCard, or anything else. One (key) ring to rule them all.
Which device then?
But yes, you can do that.
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I don’t think it exists. Yubikey is awfully close, but not quite there.
I just reread your post. Yes, you can do that