Cryptosteel Cassette Solo

The Cryptosteel Cassette contains a set of steel character tiles that can be used to store your password or seed phrase in the stainless steel Cassette. One Cassette is double-sided and can store a seed phrase or password composed of 24 words abbreviated to the first 4 letters.

Second Cassette Solo 50% OFF
Original Cryptosteel Cassette
Cryptosteel Cassette Solo $94



Only The Original Cryptosteel Cassette is 100% timeproof

The Cryptosteel Cassette is the product that started it all and established the market for offline metal wallets.

The Cassette is a pocket-sized stainless steel unit designed to securely store the alphanumeric data of your choosing with no need for specialised tools or third-party involvement. Each device comes with its own kit of stainless steel tiles engraved on each side.

Codes and passwords are assembled manually from the supplied part-random set of characters. You can store up to 96 characters worth of confidential information quickly, guaranteeing the safety and privacy of your data. Once a desired sequence is locked into your Cassette, it essentially gains the status of offline permanence, featuring resistance to physical damage, including fire, flooding, corrosive conditions, electric shock and impact from accidents.

Optimised for Recovery Seed Phrases

Your 12-24 recovery seed phrase is based on Bitcoin Improvement Proposal 39, known as BIP39, which allows the use of a language-based mnemonic phrase to serve as your backup in the event your wallet gets lost or becomes unusable.

The words are selected from a specific list of 2,048 common English words. While not all of the words have exactly four letters, each was selected in such a way that the first four characters unambiguously identify each word. This goes for the occasional three-letter word, too, in which the fourth character is blank. So if you have four tiles, you have your word.

Cryptosteel Mnemonic can hold up to 96 characters, which is exactly what you need to store a 24-word list in the BIP39 protocol. Each Mnemonic tile kit contains an optimised character count and spread for maximum functionality and ease of use. The kits are part-randomised for an extra layer of security.

Need more flexibility? Get a Cryptosteel Capsule instead!

cryptosteel open with laptop

Entering your Data into the Cryptosteel Cassette


Open the cassette

Slide open the casing.


Unlock the unit

Unlock the safety by turning the screw. You can use a letter-tile instead of a screwdriver.


Release the lever

Press down the spring lock (1) simultaneously (2) pull the gate to gain access to the slots.


Password entry

Enter your password using the supplied letter-tiles.


Clossing the cassette

Close the gate.


Security lock

Block access by turning the screw clockwise.

Watch The How-To Videos

Standardised Tiles vs. Hand-Written Solutions

Our aim is to standardise the offline information protection system and provide a solution right out of the box. You don’t need to think or worry about buying additional materials or special tools. You don’t have to learn the hard way how painful engraving metal can be – no specific knowledge or safety equipment is needed. Simply open the pack and get started – everything you need is right there.

We use a classic, easy to read font that will be legible 10 or 1000 years from now. Hand engravings will naturally differ from person to person. Over time, you (or your heirs) may not be able to retrieve the information from a hand-written backup due to style, ambiguity, or decay. Using standardised tiles, you can change, undo, or redo the data you wish to be guarded. Should you make any errors, you can easily correct them.




Tile durability

✅ Debossed – strong and durable

❌ Laser engraving – susceptible to damage and wear


✅ Original design

❌ Imitates the Cryptosteel design


✅ Quality materials and continuously improved

❌ Not improved over time and lacks quality materials


✅ Reusable

❌ Disposable

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