---
title: "CardSigner"
description: "A CNC-machined aluminium bitcoin signer with a smartcard slot. Pre-order, ships in December 2026."
url: "https://bitsaga.be/shop/product/cardsigner"
language: "en"
---

> A CNC-machined aluminium bitcoin signer with a smartcard slot. Pre-order, ships in December 2026.

# CardSigner

€250.00 (starting price), VAT included

Availability: In stock
Category: Signers

CNC-machined aluminium, sandblasted and anodized black. Every edge chamfered. Silver buttons. Designed and manufactured in Belgium.

A hardware wallet keeps your seed inside. CardSigner saves it to a card and then forgets it. Create your seed on CardSigner and save it to a PIN-locked Satochip SeedKeeper card. Unplug it: the seed is gone from the device, and the card keeps it.

Your wallet creates a transaction. CardSigner scans it and signs it.

- Runs ShieldSigner: open source, community-made software
- Bitcoin only. No account.
- 2.8 inch IPS screen, 320×240, camera for QR codes
- Smartcard slot for SeedKeeper cards
- No Wi-Fi, no Bluetooth, USB-C power

Black metal SeedKeeper cards are optional: up to five, EUR 35 each.

Pre-order: you pay in full now, and we ship in December 2026.

Download and verify the firmware yourself at [verify.bitsaga.be](https://verify.bitsaga.be/).

## Options

- No card: €250.00
- 1 card: €285.00
- 2 cards: €320.00
- 3 cards: €355.00
- 4 cards: €390.00
- 5 cards: €425.00

[View on the shop](https://bitsaga.be/shop/product/cardsigner)