Presence, as well as a password.
The fingerprint sensor adds a physical check to open your cryptograms. You can create backups with or without biometrics, according to your recovery plan.
Available
CUVEX / CUVEX-BIT-01-ALU
Cuvex BIT
Your control, in its most advanced form.
Sign Bitcoin and encrypt your secrets offline. Anodised aluminium body, USB-C connection and a biometric layer you choose to activate. Includes 12 NTAG216 NFC cards with the Cuvex logo, one Faraday device pouch and four Faraday card pouches.
- ✓ Sign Bitcoin using PSBTs
- ✓ Offline AES-256-GCM encryption
- ✓ Optional biometrics + password
- ✓ No NFC or Bluetooth on the device
- ✓ 12 NTAG216 cards with the Cuvex logo
- ✓ 1 Faraday device pouch + 4 card pouches
369.00 USDFinal price. Taxes, shipping and customs duties included.
Reference price in USD.
≈ 0.00521843 BTC≈ 369.092274 USDC
USDC is not currently available as a payment method.
Fewer interfaces. Greater purpose.
BIT has no NFC or Bluetooth. Files and updates are exchanged via USB-C, with cryptographic operations performed offline.
Built for the long term.
The anodised aluminium body provides rigidity and a precise finish. The screen lets you review what you are about to authorise before signing.
What you receive.
Your device. A more complete backup plan.
1 × Cuvex BIT · CUVEX-BIT-01-ALU
1 Faraday device pouch
DFB-PU02-23
4 Faraday card pouches
CFB-PU01-23
2 packs of 6 NTAG216 NFC cards with the Cuvex logo: 12 cards in total
CP-6NFC-23
Final price in USD. Taxes, shipping and customs duties included.
The photographs show the components. The contents and quantities included in the pack are those listed on this page.
CUVEX DESKTOP + MIRROR
Desktop and Mirror compatibility
Cuvex BIT connects to Cuvex Desktop over USB-C. Mirror links a compatible Android phone’s NFC to your computer over Bluetooth; it does not add NFC or Bluetooth to the BIT device.
Cuvex BIT connects directly to Cuvex Desktop over USB-C. To fully operate Cuvex Original with Desktop, you need Cuvex Mirror on a compatible NFC smartphone, linked to your computer over Bluetooth. Mirror reads and writes NFC cards; sensitive operations are reviewed and authorized on your Cuvex device.
Cuvex Desktop
Cuvex Desk brings your tools together on Windows, macOS and Linux. In normal use, you review and authorize sensitive operations on your Cuvex. Mirror supplies your phone’s NFC; local decryption is reserved for emergencies.
Windows · macOS · Linux
Explore the apps →Cuvex Mirror
Cuvex Mirror uses your compatible smartphone’s NFC to read and write cards for Cuvex Desktop through an encrypted Bluetooth connection. It is required to fully operate Cuvex Original with Desktop. Mirror does not decrypt your secrets or replace authorization on the hardware.
What do I need to use Cuvex Mirror?
You need Android 8 or later with NFC, a camera and Bluetooth peripheral mode, plus a computer with compatible Bluetooth and Cuvex Desk. A temporary PIN and QR bind the session. Mirror needs no account or Internet permission and does not decrypt your secrets.
Compatibility
You need the Cuvex app and an Android smartphone or iPhone with USB-C. The phone manages external media; BIT has no NFC reader.
The password remains necessary even with biometrics enabled. Biometric cryptograms need Cuvex BIT for recovery and are cloned onto external USB drives connected to the smartphone.
The included NTAG216 cards support compatible non-biometric cryptograms that require all participants. Cuvex Original reads them directly; Cuvex BIT uses NFC on a compatible smartphone. X-of-6 threshold schemes require 8K cards. NTAG216 cards do not replace the 8K transaction card used by Cuvex Original.
Distribute your encrypted backups across separate locations and check that you can recover them. Faraday pouches add a radio-frequency barrier when properly closed; effectiveness depends on the closure, frequency and condition of the pouch. They do not replace encryption or a recovery plan.
Device assembled in Spain. Accessories manufactured in China.
Manufacturer, safety and support
Tidy Money LLC · Business ID 7711034
1209 Mountain Road PL NE STE R
Albuquerque, NM 87110
Bernalillo County (USA)
Contact: sato@cuvex.io
Responsable en la UE: CR.
Never enter your seed or private keys in the store or support.
Soporte de seguridad anunciado hasta 30/10/2026, sin perjuicio de los derechos y obligaciones legales.
SKU: CUVEX-BIT-01-ALU. Never enter your seed or private keys in the store or support.
Safe use and limits →ORIGINAL 1.2.1 · BIT 1.2.2
What they share. What you should know.
Choose BIT to exchange files over USB-C with Desktop or a compatible app and add a fingerprint as an extra factor. BIT has no NFC or Bluetooth.
What does AES-256-GCM add?
New cryptograms use AES-256-GCM authenticated encryption, checking the protected content and authentication tag. This does not mean that all metadata or every older copy has this protection.
Is cryptogram multisignature the same as Bitcoin multisig?
No. Protect decryption with up to six participants, requiring everyone or a threshold such as 2 of 3. This policy controls access to the secret; it does not turn a wallet into a Bitcoin multisig wallet.
Which transactions can these versions sign?
Both devices process BIP174 v0 PSBTs with P2WPKH inputs and SIGHASH_ALL. They review recipients, amounts, change and fees; approval is bound to that transaction and the signature is verified. Displaying Taproot Bech32m recipients does not mean signing Taproot inputs. Private keys are not exported for signing.
What happens after incorrect passwords?
Three attempts trigger a five-minute pause that persists after power loss. This limits attempts on the device, not offline attacks on an exported copy. Use strong credentials and protect your backups.
What does Reinforce Cryptogram do?
After decrypting a compatible older unauthenticated copy, create a reinforced version while retaining the secret, credentials and participant policy. Original saves it to NFC; BIT returns it over USB-C and retains biometric templates where applicable. Verify the new copy before retiring the old one.
How do dice and a coin create a wallet?
The guided flow produces a 24-word BIP39 seed using the 2048-word dictionary. Follow the device’s rolls and checks. The menu language does not determine the seed dictionary language.
Can I move any cryptogram between devices?
No Cuvex cryptogram is tied to a particular device. You can decrypt it on any compatible Cuvex device, provided you retain the cryptogram and its required credentials. Cryptograms protected with biometrics can only be decrypted on Cuvex BIT.
How do I connect my Cuvex to Desktop?
Cuvex BIT connects directly to Cuvex Desktop over USB-C. To fully operate Cuvex Original with Desktop, you need Cuvex Mirror on a compatible NFC smartphone, linked to your computer over Bluetooth. Mirror reads and writes NFC cards; sensitive operations are reviewed and authorized on your Cuvex device.