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

Type: hardware_wallet
Price: $99
Interface: NFC, USB
Price Usd: 99
Air Gapped: No
Device Type: nfc_card
Form Factor: card
Open Source: Yes
Screen Type: none
Bitcoin Only: Yes
Connectivity: NFC
Manufacturer: TwentyTwo Devices
Release Year: 2024
Launched Year: 2025
Secure Element: Yes
Supported Coins: BTC

Links

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