DAU Key.
Your Smart Wallet.
Introducing DAU Key
The smart wallet that is as slim as a bank card and as secure as a vault
About DAU Key
DAU Key is an innovative cold wallet designed for secure management of assets.
DAU Key provides full control with offline storage, minimizing risks of theft, hacks, or fraud.
Even if lost, access can be restored with backup cards, offering instant accessibility without the need to reimport a saved recovery phrase.
Paired with the DAU Vault App, DAU Key enables you to receive, store, and transfer assets.
The DAU Vault application is similar to other wallets, such as MetaMask, and supports both hot and cold wallets. DAU Key is a cold wallet, similar to offerings by Ledger or Trezor.
Hardware Wallets vs Hot Wallets
Hardware wallets, like the DAU Key, offer enhanced security and control over your assets as the private keys are stored offline in the device.
Hot wallets store private keys on systems connected to the internet, which makes them susceptible to online attacks where your assets could be stolen remotely.
Custodial wallets on exchanges mean you lack control and ownership, risking access to your funds during bankruptcy or withdrawal pauses.
Why Choose the DAU Key
The DAU Key stands out for its simplicity and security, offering several distinctive features
Store hundreds of assets
on DAU Key
Technology
Inside the DAU Key
At the heart of every DAU Key is the Secure Element, a 1 x 1mm powerful certified chip developed with Samsung Semiconductor, designed in collaboration with Tangem, a high-tech company headquartered in Zug, Switzerland.
Smart Backup
Backup feature available for your DAU Key on up to two additional cards, offering peace of mind and convenience in case of unforeseen circumstances.
Backup cards function identically to your primary DAU Key.
Experience the convenience of managing your assets offline using the DAU Key with the DAU Vault app. This self-custodial mobile wallet offers a seamless connection to the blockchain, empowering you to control your DAU, KBAR, and other assets securely.
Choose Your DAU Key
Select between a 1, 2 or 3 card set to create wallets and backups effortlessly - for yourself or as a gift for others.
Need Help?
Browse our FAQ section to get answers to your questions,
including refunds, billing, and shipping.
Product Comparison
DAU Key
Other Wallets
Configuration time
1–3 min
> 20 min
Battery
Not required
Built-in
Backup option
Multiple cards for the same wallet
Seed phrase (BIP39)
Non-extractable key
Yes
No
Hardware certification
EAL 6+
EAL 5+ or less
Hardware components
Only secure element
Secure element & non-certified parts
Anti-counterfeit protection
Firmware attestation
Anti-fake stickers
Water and dust protection
Full (IP68)
No
Access code protection
Yes
Yes
Assess code recovery
Yes
No
Smart Card Specifications
85.6 mm x 54 mm
Thickness 1 mm
Card Weight 5 g
1 x 1 mm Chipset
Chip model
Samsung S3D350A
Fabrication process
65 nm
Core
SC000
Flash Memory
352 K
ROM
32 K
RAM
11 K
Interface
ISO 7816, ISO 14443 A