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- Key Card vs Lightning Tip Cards
Arculus Key Card vs Satoshi Engineering Lightning Tip Cards
What Key Card does better (0) and where Lightning Tip Cards wins (2) — every spec side by side.
vs
5.3Open source8.1
Why is Key Card better than Lightning Tip Cards?
Key Card has no measurable advantages in this pair.
Why is Lightning Tip Cards better than Key Card?
- Source code availableNo · Key Card: Yes
- Upgradable firmwareNo · Key Card: Yes
Specifications
Side by side
| Security | ||
| Secure Element chip | Yes | — |
| Secure Element certification | EAL6+ | — |
| Air-gapped signing | No | — |
| 100% air-gapped | No | — |
| Supply-chain & tamper protection | Yes | — |
| Anti-klepto (anti-exfil) signing | No | — |
| Firmware & open source | ||
| Open-source firmware | No | No |
| Source code available | No | Yes |
| Reproducible builds | No | No |
| Upgradable firmware | No | Yes |
| Bitcoin-only firmware / edition | No | — |
| Device lock | ||
| PIN lock | Yes | — |
| PIN entered on the device | No | — |
| Duress PIN / decoy wallet | No | — |
| Brick / wipe PIN | No | — |
| Wipe after failed attempts | No | — |
| Time-delayed unlock | Yes | — |
| Anti-phishing words | No | — |
| Keys & backup | ||
| BIP39 passphrase | No | — |
| Shamir backup (SLIP-39) | No | — |
| Seed XOR | No | — |
| BIP85 child seeds | No | — |
| 24-word seed | Yes | — |
| SeedQR backup | No | — |
| microSD backup | No | — |
| NFC backup card | No | — |
| User-added entropy (dice) | No | — |
| Stateless use (no stored keys) | No | — |
| Multiple seeds on one device | No | — |
| Bitcoin features | ||
| Multisig | No | — |
| Miniscript | No | — |
| Message signing | No | — |
| Coin control | No | — |
| Own node connection | No | — |
| Tor support | No | — |
| Replace-by-fee | No | — |
| Silent Payments | No | — |
| Spending limits | No | — |
| Testnet | No | — |
| Supported assets | ||
| Altcoins & tokens | Yes | — |
| Bitcoin only | No | — |
| Connectivity | ||
| Signing connectivity | NFC | — |
| USB | No | — |
| Bluetooth | No | — |
| NFC | Yes | — |
| QR code camera | No | — |
| Animated QR (UR) | No | — |
| microSD signing | No | — |
| Screen & input | ||
| Screen | No | — |
| Touchscreen | No | — |
| Colour screen | No | — |
| QWERTY keyboard | No | — |
| Battery & power | ||
| Built-in battery | No | — |
| Design | ||
| Weight | 15 g | — |
| Length | 85.6 mm | — |
| Width | 54 mm | — |
| Materials | Plastic & Stainless Steel | — |
| Water / dust resistance | Yes | — |
| Several colours available | No | — |
| Warranty (months) | 24 | — |
| Assembled in | USA | — |
| DIY build possible | No | — |
| Apps | ||
| Official apps | Android, iOS | — |
| Desktop app | No | — |
| Mobile app | Yes | — |
| Compatible third-party wallets | 0 | — |
| Other features | ||
| FIDO2 / U2F security key | Yes | — |
| Password manager | No | — |
