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- Flex vs Shield BIO
Ledger Flex vs SecuX Shield BIO
What Flex does better (21) and where Shield BIO wins (2) — every spec side by side.
vs
8.1Security3.8
5.5Open source5.3
8.8Bitcoin features6.2
8.7Ease of use8.0
9.0Connectivity9.1
Why is Flex better than Shield BIO?
- MultisigYes · Shield BIO: No
- Screen size2.84″ vs 1.1″2.6×
- Secure Element certificationEAL6+ vs EAL5+
- BIP39 passphraseYes · Shield BIO: No
- MiniscriptYes · Shield BIO: No
- TouchscreenYes · Shield BIO: No
- Compatible third-party wallets11 vs 0
- Battery capacity200 mAh vs 14 mAh14.3×
- Thickness7.7 mm vs 28 mm3.6×
- Duress PIN / decoy walletYes · Shield BIO: No
- NFC backup cardYes · Shield BIO: No
- Message signingYes · Shield BIO: No
Why is Shield BIO better than Flex?
- Weight58 g vs 8 g7.2×
- Fingerprint unlockNo · Flex: Yes
Specifications
Side by side
| Security | ||
| Secure Element chip | Yes | Yes |
| Secure Element certification | EAL6+ | EAL5+ |
| Air-gapped signing | No | No |
| 100% air-gapped | No | No |
| Supply-chain & tamper protection | Yes | Yes |
| Anti-klepto (anti-exfil) signing | No | No |
| Firmware & open source | ||
| Open-source firmware | No | No |
| Source code available | No | No |
| Reproducible builds | No | No |
| Firmware licence | Limited Use | — |
| Upgradable firmware | Yes | Yes |
| Firmware update via | Bluetooth | Bluetooth |
| Bitcoin-only firmware / edition | No | No |
| Device lock | ||
| PIN lock | Yes | Yes |
| PIN entered on the device | Yes | Yes |
| Fingerprint unlock | No | Yes |
| Duress PIN / decoy wallet | Yes | No |
| Brick / wipe PIN | No | No |
| Wipe after failed attempts | Yes | — |
| Time-delayed unlock | No | No |
| Anti-phishing words | No | No |
| Keys & backup | ||
| BIP39 passphrase | Yes | No |
| Shamir backup (SLIP-39) | No | No |
| Seed XOR | No | No |
| BIP85 child seeds | No | No |
| 24-word seed | Yes | Yes |
| SeedQR backup | No | No |
| microSD backup | No | No |
| NFC backup card | Yes | No |
| User-added entropy (dice) | No | No |
| Stateless use (no stored keys) | No | No |
| Multiple seeds on one device | No | No |
| Bitcoin features | ||
| Multisig | Yes | No |
| Taproot | Yes | Yes |
| Miniscript | Yes | No |
| Message signing | Yes | No |
| Coin control | Yes | No |
| Own node connection | Yes | No |
| Tor support | Yes | No |
| Replace-by-fee | Yes | No |
| Silent Payments | No | No |
| Spending limits | No | No |
| Testnet | Yes | No |
| Supported assets | ||
| Altcoins & tokens | Yes | Yes |
| Bitcoin only | No | No |
| Connectivity | ||
| Signing connectivity | USB-C, Bluetooth, NFC | Bluetooth |
| USB | Yes | No |
| USB-C | Yes | Yes |
| Bluetooth | Yes | Yes |
| NFC | Yes | No |
| QR code camera | No | No |
| Animated QR (UR) | No | No |
| microSD signing | No | No |
| Screen & input | ||
| Screen | Yes | Yes |
| Screen size | 2.84″ | 1.1″ |
| Screen type | E-Ink | E-Ink |
| Screen resolution | 600 × 480 | 148 × 70 |
| Touchscreen | Yes | No |
| Colour screen | No | No |
| Gorilla Glass | Yes | No |
| Controls | Touch Screen | Buttons |
| QWERTY keyboard | — | No |
| Battery & power | ||
| Built-in battery | Yes | Yes |
| Battery capacity | 200 mAh | 14 mAh |
| Removable battery | No | No |
| Wireless charging | No | No |
| Design | ||
| Weight | 58 g | 8 g |
| Length | 78.4 mm | 85.6 mm |
| Width | 56.5 mm | 54 mm |
| Thickness | 7.7 mm | 28 mm |
| Materials | Plastic & Aluminum | Plastic |
| Water / dust resistance | No | No |
| Several colours available | Yes | No |
| Warranty (months) | 24 | 12 |
| Assembled in | Vietnam | Taiwan |
| DIY build possible | No | No |
| Apps | ||
| Official apps | Windows, macOS, Linux, Android, iOS | Android, iOS |
| Desktop app | Yes | No |
| Mobile app | Yes | Yes |
| Works with wallet apps | Bitcoin Safe, Theya, Wasabi, Nunchuk, Electrum, Sparrow, Specter Desktop, Blockstream Green, BlueWallet, Bitcoin Keeper, Liana | — |
| Compatible third-party wallets | 11 | 0 |
| Other features | ||
| FIDO2 / U2F security key | Yes | No |
| Password manager | Yes | No |
