SeedSigner Review

Seedsigner is a do-it-yourself (DIY) air-gapped cryptocurrency hardware wallet. The device is highly secure as it features no external connectivity. However, less experienced investors could find Seedsigner difficult to use due to its DIY nature.
Jay Leonard
Posted by: Jay LeonardUpdated Jul 10th, 2023

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Securing your assets is crucial for any crypto investor, but choosing the best hardware wallet can be a difficult task due to differing opinions and the complex terminology used. However, SeedSigner has gained traction recently due to its air-gapped nature, high level of security, and do-it-yourself approach. But how does it compare to other hardware wallets?

Throughout this SeedSigner review, we'll discuss the wallet's ease of use, performance, and cost while providing a detailed guide covering the entire build process.

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Our Take

HedgewithCryptoScoreOur ratings take into account the ease of use, fees, deposit methods along with the exchange's reputation. All ratings are determined solely by our editorial team.
Full StarFull StarFull StarEmpty StarEmpty Star

Bottom line:

A SeedSigner is a great tool for serious Bitcoin investors. It's simple to use once built, and its air-gapped nature makes it excellent for adding further protection to your Bitcoin wallet. However, due to it needing to be linked to external software, only supporting a single asset, and being comparable in price to a Ledger or Trezor, we can recommend the device to those solely investing in Bitcoin.

  • Air-Gapped Hardware Wallet
  • No Risk of Supply Chain Attack
  • Customizable (DIY wallet)
  • More Difficult to Setup Than a Typical Hardware Wallet
  • Can Only Store Bitcoin

Pros Explained

  • Air-gapped - One of the largest benefits of using a SeedSigner is that the device is air-gapped, preventing network-based attacks. As such, a SeedSigner could be ideal for security-conscious Bitcoin investors.
  • No risk of supply chain attack - Because you can buy the components to build a SeedSigner, the device is not susceptible to supply chain attacks which involve a bad actor flashing compromised software to a crypto wallet during transport. Therefore, the device offers additional peace of mind to investors.
  • Customizable - While every SeedSigner requires the same basic components, you can choose or create unique shells or buttons, providing a greater sense of customizability versus other hardware wallets. Furthermore, you can opt for a bare-bones build to acquire a secure Bitcoin wallet at a price matching your budget.

Cons Explained

  • Difficult to set up. While you can purchase a pre-assembled SeedSigner, most users are likely to opt for the cheaper DIY version. Therefore, there is some initial setup required before the device is usable. We tested the build process for our SeedSigner review and found that while simple, it was fairly tedious, which could dissuade some users.
  • Can only store Bitcoin. Unfortunately, a SeedSigner can only store Bitcoin (BTC). As such, investors looking to secure a wide variety of altcoins on a single device would be better served by another cold wallet, like a Ledger Nano X.

SeedSigner Compared and Alternatives

While Seedsigner is a great Bitcoin wallet, other options may be better tailored to your needs. Below, we've summarized a few of the best hardware wallets on the market today.

ExchangeCrypto AssetsTrading FeesRatingPromotionWebsiteReview
ledger wallet

Ledger Wallet

5,550+0.25% for swaps
RatingOur ratings take into account the ease of use, fees, deposit methods along with the exchange's reputation. All ratings are determined solely by our editorial team.
Full StarFull StarFull StarFull StarHalf Star
None available at this timeVisit Ledger Wallet
Trezor One logo

Trezor One

1,300+1.8% to 3.6% for credit card purchases
RatingOur ratings take into account the ease of use, fees, deposit methods along with the exchange's reputation. All ratings are determined solely by our editorial team.
Full StarFull StarFull StarFull StarEmpty Star
None available at this timeVisit Trezor OneTrezor One Review
keystone wallet logo


RatingOur ratings take into account the ease of use, fees, deposit methods along with the exchange's reputation. All ratings are determined solely by our editorial team.
Full StarFull StarFull StarHalf StarEmpty Star
None available at this timeVisit KeystoneKeystone Review

SeedSigner At a Glance

Founded in 2020, a SeedSigner is a DIY hardware wallet for Bitcoin. The project aims to provide a secure way for people to store their assets without relying on a company like Ledger that must comply with governmental requests.

Wallet NameSeedSigner
FeaturesAir-Gapped, Custom Seed Generation, Power-Only USB
Accepted Fiat CurrenciesVarious Based on Vendor
Payment MethodsCredit/Debit Card, Crypto
Supported CryptocurrenciesBitcoin only
Customer SupportVideo Guides, Telegram, Twitter, GitHub Email,
Security MeasuresAir-Gapped, DIY, Power-Only USB
Mobile AppNo

Review of SeedSigner's Top Features

Air-Gapped Wallet

The main attraction to a SeedSigner wallet is its air-gapped nature. To maximize security, the wallet cannot be connected to the internet, Bluetooth, or any similar form of wireless connectivity. Compared to hot wallets (internet-connected crypto wallets), verifiably air-gapped devices are far more secure, making them ideal for investors looking for the best way to protect their assets for long-term storage.

Built SeedSigner walletBuilt SeedSigner wallet

In the case of SeedSigner, the wallet uses a camera to scan QR codes to send transactions. As QR codes are unique and an excellent way of sending information between computers, sending and receiving transactions is almost as simple as traditional wallets. However, it does reduce portability as you'll need a screen to scan the QR code on for the device to be effective.

Power-Only USB

The whole point of the SeedSigner project was to create a secure air-gapped stateless Bitcoin wallet to protect the private keys. The device features no external connectivity other than a few USB ports (1-2 ports depending on which shell is used). While this sounds like it could pose a serious security risk, for example, accidentally plugging the device into a compromised computer, Seedsigner has considered this.

The leftmost USB port (the only available port on our shell) is power-only, meaning that even if you connect the device to an infected device, no data transfer is possible, rendering direct attacks impossible. This feature is hugely important for security-conscious individuals as it acts as another layer of protection against bad actors attempting to steal your funds.

SeedSigner Power-Only USBSeedSigner Power-Only USB

Custom Seed Generation

An intriguing feature of the SeedSigner is the ability to create randomized and unique Bitcoin wallets using images. As the device is equipped with a camera unit, you can take a picture and use it to generate your private key using the photo-to-seed tool. Because no two photos will be identical, using an image to create a key is extremely secure and highly randomized.

The one drawback to SeedSigner's approach is that you'll be required to manually create a QR code in addition to noting down your seed phrase. Although you can complete the process fairly quickly thanks to the in-built zoom mode, it's undeniably tedious and requires a good deal of attention to detail. Otherwise, you could easily fill in the QR code incorrectly, making it more challenging to recover your assets.

SeedSigner Custom Seed GenerationSeedSigner Custom Seed Generation

Supported Coins

The SeedSigner is billed as a Bitcoin multi-signature wallet and is designed only to support the storage of BTC. In theory, changes to the software could make it possible for the device to store multiple assets in the future with only a quick update. However, there do not currently seem to be any plans for implementing this change, rendering the device unsuitable for those looking to move their assets off an altcoin exchange.

Seedsigner Pricing

Because a SeedSigner is comprised of several components, pricing for the complete unit is liable to change based on location, vendor, and market conditions. However, we looked through the approved sellers on the SeedSigner website and found Vulcan to be the cheapest for the UK and EU at $92.79 for a complete device and shipping. For US customers, BTC Hardware Solutions is the cheapest at $80.

SeedSigner Pricing Compared

Although a SeedSigner is billed as a cheaper and more secure alternative to mainstream hardware wallets like a Trezor Model One, Ellipal, or the Arculus Wallet, the devices are quite comparable in cost. A Trezor One sells for $69, and you can buy a Ledger Nano S Plus for $79. Therefore, consider your options and personal requirements before purchasing a SeedSigner kit.

Wallet NamePrice (USD)
Trezor Model One$69
Ledger Nano S Plus$79
SeedSigner$80 to $93

Seedsigner Ease of Use

At its core, a SeedSigner is fairly easy to use. However, a fair few additional steps are required to begin sending and receiving Bitcoin compared to traditional hardware wallets, which can make the device less appealing to beginners looking for an easy way to improve their Bitcoin storage security.

First, you have to buy the required comments and physically build your stateless Bitcoin signing device. Thankfully, this process is fairly simple, but you'll still need an hour or two to familiarize yourself with the technology and understand how the SeedSigner works, how it's built, and how it connects to the Bitcoin network.

Linking SeedSigner to Sparrow WalletLinking SeedSigner to Sparrow Wallet

To use a SeedSigner to send and receive transactions, you'll need to link it to a wallet coordinator like Specter Desktop, Sparrow Wallet, Nunchuk, or BlueWallet. Connecting a wallet is simple; use the export xPUB data option on SeedSigner and scan the animated QR codes. Afterward, you can use the wallet coordinator software to send and receive Bitcoin transactions.

After thoroughly testing the device for our Seedsigner review, we found it to be mostly easy to use but require some less common technical knowledge. Thankfully, the device is simple to use once you familiarize yourself with its inner workings, making it accessible to anyone willing to do a few hours of research. However, it is not ideal for beginners looking for an easy Bitcoin wallet.

How To Build A SeedSigner

1. Obtain the required parts

A Seedsigner can be created with as little as four parts and a casing to house them in. Furthermore, all the parts can be purchased together from one of the retailers listed on the SeedSigner website. As such, the build process is simple and well within the reach of the average crypto investor.

The required parts to build a Seedsigner include:

  1. Raspberry PI Zero Version 1.3)
  2. WaveShare 1.3 Inch LCD Hat
  3. Raspberry PI Zero-Compatible Camera Unit
  4. MicroSD Card with at least 4GB Storage
  5. Shell/Casing (Used to house components but technically functional without)

After you have acquired all of the parts, you must begin the assembly of the Bitcoin signing device.

2. Download and flash SeedSigner software

First, you must prepare the SeedSigner software and flash it to your SD Card. This process is simple and takes only a couple of minutes to complete. Head to the SeedSigner website and download the relevant .img file; it should have the name of your Raspberry PI in the filename. For example, ours was called 'seedsigner_os.0.6.0.pi0'.

To flash the file to your SD card, you'll need the free BalenaEtcher software. Once downloaded and installed, open BalenaEtcher, select the SeedSigner .img file, find your SD card, and press 'Flash.' Once the file has been flashed to the SD card, the software will notify you, and you're ready to move on to the next step.

Flashing Image to SD CardFlashing Image to SD Card

3. Insert MicroSD card

After flashing the SeedSigner software, you need to install the SD card into your Raspberry PI. During installation, we recommend keeping your Raspberry PI on top of its anti-static packaging to ensure it doesn't get fried accidentally.

The SD card slot is on the device's left, next to the Mini HDMI port. To install the SD card, push it into the slot with the gold pins facing down.

SeedSigner Raspberry PISeedSigner Raspberry PI

4. Install the camera module

Next, you'll need to install the Camera module. Before inserting the cable, open the black pull tab on the rightmost slot. Afterward, press the camera unit into the slot with the pins facing down and close the tab. After testing, you'll need to bend the camera ribbon cable under the Raspberry PI and align the camera with the hole in the shell, securing the ribbon cable using the included sticky tab.

5. Connect the LCD display

To connect the LCD display, align the pins on the Raspberry PI to the holes on the camera unit and gently but firmly insert the display. After this step, it's advisable to test the device. To do so, plug in the USB power cable, and wait around 30 to 60 seconds. If the SeedSigner logo appears, you're good to go.

Insert LCD to Raspberry PI SeedSignerInsert LCD to Raspberry PI SeedSigner

6. Install hardware components into shell

Once you've tested the device, take off the LCD screen and align the camera unit with the hole in the shell. Then, install the Raspberry PI by slotting it into the case one side at a time, starting with the USB slot. Then, connect the LCD like before, place the buttons for keys 1 to 3 in the faceplate, and lower it onto the rest of the casing. Afterward, screw in the joystick button, and you're ready.

SeedSigner Partly Installed in ShellSeedSigner Partly Installed in Shell

7. Test device and generate wallet

Now that your SeedSigner device is complete, you can generate a wallet. To do this, plug in the SeedSigner, select 'Seeds,' and enter a seed phrase or choose 'Create a Seed.' The device supports generating a seed using dice rolls or via digital photo. Once you've created and stored your seed phrase, you can link the device to a wallet coordinator.

Create a Seed SeedSignerCreate a Seed SeedSigner

SeedSigner Support

While no live chat or phone support is available, you can contact the SeedSigner team via email, GitHub, Twitter, Youtube, or Telegram. Additionally, many video guides are available on the main SeedSigner website on topics like building the device and setting up the software.

Frequently Asked Questions

Yes, a SeedSigner can only store Bitcoin and no other assets. As such, while suitable for Bitcoin investors, people looking to move their altcoins from a crypto trading platform to cold storage will need another option.

Building a Seedsigner crypto wallet is similar to building a PC or a Lego set. You must purchase all required parts (Raspberry PI Zero, camera unit, 4GB MicroSD card, cables), but many websites combine all the necessary components. The build process requires minimal know-how and no soldering, making it accessible for anyone, regardless of their technical proficiency.

A SeedSigner is a physical Bitcoin transaction signing device. Once built, you must connect it to a wallet coordinator to send or receive transactions. The SeedSigner provides an extra layer of security, as no transactions can be sent without access to the device.

While there is no SeedSigner app, Nunchuk, one of the four supported wallet coordinators, is available on Android and iOS devices. However, it had fewer than 100 reviews at the time of writing, indicating a lack of popularity.

Final Verdict and Scores

Our SeedSigner review found the device to be a well-designed take on a Bitcoin hardware wallet. Although the device requires research to understand how it works and which components are needed to create it, it's fairly simple to use once correctly assembled. However, as a SeedSigner is a signing device rather than a fully featured wallet, it must be connected to external software, which could cause confusion.

Overall, a SeedSigner is perfect for Bitcoin investors with a little bit of technical know-how that are willing to get their hands dirty. Although the device requires more setup than other hardware wallets, it's perhaps the most secure currently available way to store your BTC holdings.

CategoryHedgewithCrypto Rating
Features4 / 5
Supported Cryptocurrencies1 / 5
Pricing 4 / 5
Ease of Use3 / 5
Customer Support3.5 / 5
Jay LeonardJay LeonardJay Leonard

Jay has been providing commentary on the cryptocurrency market and offering readers guidance for over three years. While primarily focused on fundamental analysis and what institutional adoption means for the industry, Jay also has experience with technical analysis, actively trading and investing in a wide range of assets.

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