Want a hardware wallet that works by tapping it on your phone? NFC-only devices are a niche category. Portal is Bitcoin-only, open source, and has a small display for transaction verification. Tangem is multi-coin, has closed-source card firmware, and has no display, meaning you verify transactions on your phone and trust it is showing you the truth.
Buying Advice
Between these two, get Portal, but check that TwentyTwo is selling it first, because its store was still offline on November 3, 2026. Better still, consider a Jade Plus.
The Bottom Line
Portal wins. The display lets you verify transactions on the device itself. Tangem's lack of display means trusting your potentially-compromised phone. Portal's open-source firmware is auditable. Tangem's is not. Portal's Bitcoin-only focus means less attack surface. But honestly, NFC-only wallets are niche. The Jade Plus is more practical for most users.
How They Compare
The specs that matter for Bitcoin security.
| Feature | Portal | Tangem |
|---|---|---|
| Price | $99 | $70 |
| Bitcoin-Only | Yes | No |
| Open-Source | Yes | No |
| Air-Gapped | No | No |
| Secure Element | None in the published schematic (STM32L476 microcontroller) | Samsung-developed chip, EAL6+ (Tangem does not publish the model) |
| Connection | NFC only | NFC only |
Under the Hood: Security
Let's get into what actually matters: how these wallets protect your bitcoin.
- Portal: NFC-based signing on an STM32 microcontroller. No battery required.
- Tangem: NFC smart card with secure element. Simple but limited.
Portal publishes everything. Full open-source firmware that anyone can audit, build, and verify. Tangem keeps things closer to the chest. When it comes to securing your bitcoin, I want to verify, not trust.
On Altcoin Support
Tangem ships with altcoin code riding along. That's extra attack surface with zero benefit for your bitcoin. Portal keeps the firmware focused on what matters.
Why Portal Wins
Best for: Users who sign from their phone, Those who want an NFC wallet with a display, Open-source advocates, Early adopters willing to try new products.
What Holds Tangem Back
Multi-coin support introduces unnecessary risk. Multi-coin support. Limited security features. No screen for verification. Closed-source.
The core issue: Tangem supports altcoins. For serious Bitcoin storage, that's a liability, not a feature.
My Recommendation
Portal is the best NFC-only hardware wallet I have tested. Unlike Tangem, it has a display for address verification. Unlike closed-source competitors, the firmware and hardware design are auditable. It works with Nunchuk for single-sig and multisig. The tradeoffs are real: it needs an NFC phone, the published schematic shows no secure element, and the TwentyTwo store was offline when I checked in October 2026. If you can get one, the design fundamentals are sound.
Price & Value
Tangem costs less at $70, but the $29 you'd save isn't worth the trade-offs. Portal earns its price tag.
Who Should Buy Which?
If you value a focused, Bitcoin-only approach, go with Portal. If a broader feature set matters more, Tangem is your pick. But for pure bitcoin security, I always lean toward the Bitcoin-only option.
Common Questions
Which is better, Portal or Tangem?
Portal. It is Bitcoin-only, runs open-source firmware, and has a 0.96" OLED so you can check addresses on the device. Tangem has no screen and closed-source firmware, and it supports other coins. My ratings are Portal 7.5 and Tangem 1.8. Portal costs $99 and Tangem costs $70.
Can I verify transactions on Portal and Tangem?
Only on Portal. Its 0.96" monochrome OLED shows the address and amount before you sign. Tangem is a card with no display, so you trust whatever your phone shows. If that phone is compromised, a screenless card gives you no independent check, which is a serious weakness for larger holdings.
Is Portal or Tangem more secure?
It is a trade. Tangem uses an EAL6+ secure element from Samsung, while the published Portal schematic shows none. But Tangem is closed-source with no screen, and its app once wrote keys to logs in December 2024. Portal's open firmware and on-device display give you more you can verify, so Portal wins.
Can I buy Portal right now?
Buying it is uncertain. Portal is made by TwentyTwo, and its store was offline as of October 2026, so the site marks it unavailable. It costs $99 when sold. Check the TwentyTwo site before you plan around it. If you need a wallet today, the Jade Plus is in stock.
Full Reviews
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