Portal by TwentyTwo Devices
Cold Storage
Portal is a Bitcoin-only hardware wallet from TwentyTwo Devices that operates entirely on NFC power — it has no battery and no cables, drawing energy from the phone it signs with. The firmware is written entirely in Rust using the Bitcoin Dev Kit library, and the open-source project is focused exclusively on Bitcoin. Users sign transactions by tapping the card-sized device against any NFC-capable iPhone or Android phone, with no companion app installation required for basic operation. Available at approximately €89.
Details
- Price Usd
- 99
- Form Factor
- card
- Open Source
- Yes
- Connectivity
- NFC
- Manufacturer
- TwentyTwo Devices
- Launched Year
- 2025
- Secure Element
- Yes
- Supported Coins
- BTC
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