Compare providers
Side-by-side comparison for any two listings. Pick by provider id (e.g. mullvad, ivpn, feather). Updates live as curators re-grade.
| Foundation Passport | SeedSigner | |
|---|---|---|
| Category | wallets | wallets |
| Subcategory | Hardware | Hardware |
| Grade | A | A |
| Editor's Pick | — | — |
| Tagline | Air-gapped BTC hardware wallet. Camera-only QR signing, US-manufactured, open-source firmware. | DIY air-gapped Bitcoin hardware wallet built on Raspberry Pi Zero. No firmware secrets, no vendor lock-in. |
| Fees | $199 hardware · open firmware · QR-only signing | ~$50 DIY parts · open-source · stateless |
| KYC posture | light_kyc | anonymous_signup |
| Highlight tags | HARDWAREAIR-GAPOPEN-FIRMWARE | HARDWAREDIYOPEN-SOURCE |
| Feature tags | non_custodialopen_sourceaudited | non_custodialopen_sourcemultisig_supportedauditedfull_node_capable |
| Web | https://foundationdevices.com | https://seedsigner.com |
| Tor | — | — |
| Last verified | 2026-05-13 | 2026-05-13 |