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- Passport Prime vs Shell
Foundation Passport Prime vs Keycard Shell
What Passport Prime does better (17) and where Shell wins (5) — every spec side by side.
vs
8.3Security9.2
8.8Open source5.9
9.3Bitcoin features2.6
8.3Ease of use4.0
9.3Connectivity9.2
Why is Passport Prime better than Shell?
- 100% air-gappedYes · Shell: No
- TaprootYes · Shell: No
- TouchscreenYes · Shell: No
- Mobile appYes · Shell: No
- Compatible third-party wallets14 vs 72×
- Screen size3.5″ vs 2″+75%
- Anti-phishing wordsYes · Shell: No
- BIP85 child seedsYes · Shell: No
- microSD backupYes · Shell: No
- User-added entropy (dice)Yes · Shell: No
- Message signingYes · Shell: No
- BluetoothYes · Shell: No
Why is Shell better than Passport Prime?
- Anti-klepto (anti-exfil) signingNo · Passport Prime: Yes
- Duress PIN / decoy walletNo · Passport Prime: Yes
- NFC backup cardNo · Passport Prime: Yes
- USBNo · Passport Prime: Yes
- NFCNo · Passport Prime: Yes
Specifications
Side by side
| Security | ||
| Secure Element chip | Yes | Yes |
| Secure Element certification | — | EAL6+ |
| Air-gapped signing | Yes | Yes |
| 100% air-gapped | Yes | No |
| Supply-chain & tamper protection | Yes | Yes |
| Secure boot | Yes | Yes |
| Anti-klepto (anti-exfil) signing | No | Yes |
| Firmware & open source | ||
| Open-source firmware | Yes | Yes |
| Source code available | Yes | Yes |
| Reproducible builds | Yes | Yes |
| Firmware licence | GPLv3 | MIT |
| Upgradable firmware | Yes | Yes |
| Firmware update via | Bluetooth | USB |
| Bitcoin-only firmware / edition | No | No |
| Device lock | ||
| PIN lock | Yes | Yes |
| PIN entered on the device | Yes | Yes |
| Fingerprint unlock | No | No |
| Duress PIN / decoy wallet | No | Yes |
| Brick / wipe PIN | No | No |
| Wipe after failed attempts | Yes | Yes |
| Time-delayed unlock | No | No |
| Anti-phishing words | Yes | No |
| Keys & backup | ||
| BIP39 passphrase | Yes | Yes |
| Shamir backup (SLIP-39) | Yes | Yes |
| Seed XOR | No | No |
| BIP85 child seeds | Yes | No |
| 24-word seed | Yes | Yes |
| SeedQR backup | Yes | Yes |
| microSD backup | Yes | No |
| NFC backup card | No | Yes |
| User-added entropy (dice) | Yes | No |
| Stateless use (no stored keys) | Yes | Yes |
| Multiple seeds on one device | Yes | Yes |
| Bitcoin features | ||
| Multisig | Yes | Yes |
| Taproot | Yes | No |
| Miniscript | No | No |
| Message signing | Yes | No |
| Coin control | Yes | Yes |
| Own node connection | Yes | Yes |
| Tor support | Yes | Yes |
| Replace-by-fee | Yes | Yes |
| Silent Payments | No | No |
| Spending limits | No | No |
| Testnet | Yes | Yes |
| Supported assets | ||
| Altcoins & tokens | Yes | Yes |
| Bitcoin only | No | No |
| Connectivity | ||
| Signing connectivity | Bluetooth, QR code, microSD | USB-C, NFC, QR code |
| USB | No | Yes |
| USB-C | Yes | Yes |
| Bluetooth | Yes | No |
| NFC | No | Yes |
| QR code camera | Yes | Yes |
| Animated QR (UR) | Yes | Yes |
| microSD signing | Yes | No |
| Screen & input | ||
| Screen | Yes | Yes |
| Screen size | 3.5″ | 2″ |
| Screen type | IPS | TFT IPS |
| Screen resolution | 480 × 800 | 240 × 320 |
| Touchscreen | Yes | No |
| Colour screen | Yes | Yes |
| Gorilla Glass | Yes | No |
| Controls | Touch Screen | Buttons |
| QWERTY keyboard | Yes | Yes |
| Battery & power | ||
| Built-in battery | Yes | Yes |
| Battery capacity | 1,100 mAh | 800 mAh |
| Removable battery | No | Yes |
| Wireless charging | No | No |
| Design | ||
| Weight | 93 g | — |
| Length | 104 mm | 105 mm |
| Width | 55.5 mm | 65 mm |
| Thickness | 11 mm | 19 mm |
| Materials | Aluminium | ABS Plastic |
| Water / dust resistance | Yes | — |
| Several colours available | Yes | No |
| Warranty (months) | 12 | 0 |
| Assembled in | USA | China |
| DIY build possible | No | Yes |
| Apps | ||
| Official apps | Android, iOS | — |
| Desktop app | No | No |
| Mobile app | Yes | No |
| Works with wallet apps | Bitcoin Safe, Theya, Wasabi, Zeus, Nunchuk, Cove, Electrum, Sparrow, Specter Desktop, Blockstream Green, BlueWallet, Bitcoin Keeper, Bull, Casa | Bitcoin Safe, Nunchuk, Cove, Sparrow, Specter Desktop, BlueWallet, Bull |
| Compatible third-party wallets | 14 | 7 |
| Other features | ||
| FIDO2 / U2F security key | Yes | No |
| Password manager | No | No |
