Reminder: Trezor Shamir Backup is fundamentally secure

So I was very active in this space during the last 2 days, and a lot of people claimed something similar to: "Trezor also has a similar backup feature".

This is not true.

But let's look into the facts. Trezor Model T has a function called Shamir backup, which has a nice info page here. This uses Shamir’s Secret Sharing to create a number of "shards", and you can decide how many are needed to reconstruct the wallet. Here are a few very relevant details:

• Shamir Backup is available as an option only once after you create your wallet. You decide if your Trezor shows you the seed words or the Shamir shares.
• They use an open source algorithm which is documented here. Anyone can verify it and the recovery outside of a Trezor hw-wallet is possible if required.
• The shares are displayed only on the screen of the device in seed words so they are easy to write down. Your shares and seed remain cold.
• Only you get in contact with your offline shares, and you are responsible for storing / hiding them.

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What Shamir Backup doesn't do:

• It does not create shares at any time later while using the wallet
• It does not send the shares to the PC
• It does not share your shares with some random companies

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tl;dr: Trezor did an excellent implementation of a great feature with Shamir Backup. It's useful and fundamentally secure. Comparing this to a recently announced feature of a competitor is simply wrong.