Portal Review
Bitcoin hardware wallet in credit card form
Portal is what Tangem should have been. Credit card form factor with an actual e-ink display for verifying transactions. Open-source firmware you can audit. Bitcoin-only. No battery, just NFC power. It proves you can have portability without sacrificing security fundamentals.
Twenty Two Devices built Portal for one purpose: portable Bitcoin security. No altcoin support, no feature bloat. The e-ink display exists because you need to verify addresses on-device. That principle guided every design decision.
About Twenty Two Devices
Security Architecture
NFC-based signing with secure element. No battery required.
| Secure Element | Yes |
| Connection Methods | NFC only |
| Display | E-ink display |
| Passphrase Support | Yes |
| Multisig Support | No |
Trust Assessment
Reasons to Trust
- Credit card form factor
- Open-source firmware
- Bitcoin-only
- No battery needed
- E-ink display for verification
- Innovative design
Concerns
- Newer company
- NFC-only (requires compatible phone)
- Limited track record
- No multisig support yet
Where It Shines
Ultra Portable
Credit card size fits in any wallet. Most portable hardware wallet with display.
E-ink Display
Unlike Tangem, Portal has a display to verify addresses on device.
No Battery
Powered by NFC. Never needs charging, never degrades.
Open-Source
Firmware is open-source unlike other card-format wallets.
The Drawbacks
- New Product: Limited track record. Still proving itself in market.
- NFC Required: Must have NFC-capable phone. No other connection option.
- Limited Features: No multisig support currently. Simpler feature set.
Best For
- Users who prioritize portability
- Those who want card-format with display
- Open-source advocates
- Early adopters willing to try new products
Frequently Asked Questions
Still deciding on the Portal?
Take the quiz and get a personalized recommendation in 60 seconds.
Key Specifications
$99
7.5/10
Bitcoin-Only
NFC, Open Source, Compact
E-ink display
NFC only
My Final Take
Portal is the best card-format hardware wallet. Unlike Tangem, it has a display for address verification. Unlike closed-source competitors, the firmware is auditable. The NFC-only connection requires an NFC phone, and the newer company track record is a consideration. But the design fundamentals are sound. If you want credit card portability with actual security, Portal delivers.
How Portal Compares
Was this helpful?
Other reviews worth reading
Closest alternatives to the Portal, by price and security model.
