Cryptosteel Capsule is the premier backup tool for autonomous offline storage of valuable data without any third-party involvement. The solid metal device, designed to survive extreme conditions, works under nearly all circumstances. It is compatible with most secret sharing and key generation algorithms.
The Cryptosteel Capsule Duo contains two capsules and a double set of steel character tiles that can be used to store your password or seed phrase. A double set of stainless steel capsules increase your security by adding a redundancy option. One Capsule can store a seed phrase or password composed of 24 words abbreviated to the first 4 letters.