I first used it back in the secure scuttlebutt days ... it works really well with a good workflow. I think it is under utilized TBH because i think when explained it is the type of multisig people understand or expect.
Discussion
My issue with it is that you have to be aware of what devices and desktop wallets currently implement Shamir/SLIP39. The unfortunate thing about standards is that for them to be worth a damn, they not only have to be good, but they also have to be widely adopted, which SLIP39 is not.
totally true. I have not looked for it. but is there some reason devs are not using it? I feel like multisig as a topic has leveled up but Shamir seems overlooked
The standard came out of Trezor, I believe, and they were not able to build a consortium of HWW companies to support it.
Incidentally, it's highly confusing to be an Uncle Jim, trying to help a family member make sense of their wallet, and they present what look like 3 20-word mnemonic keyphrases, but the software wallet is P2WPKH. Fam was lucky I even knew what Shamir was.
I think the extreme similarities to BIP39 is what makes shamir a non-starter for me. It is just too confusing in an emergency recovery scenario to have something that LOOKS EERILY SIMILAR to something it is not.
i think there a quite q few out there now that supports slip39