Parity Signer is a mobile application that allows any smartphone to act as an air-gapped crypto wallet. This is also known as "cold storage".

You can create accounts in Substrate-based networks, sign messages/transactions, and transfer funds to and from these accounts without any sort of connectivity enabled on the device.

You must turn off or even physically remove the smartphone's Wifi, Mobile Network, and Bluetooth to ensure that the mobile phone containing these accounts will not be exposed to any online threat. Switching to airplane mode suffices in many cases.

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The legacy app is still fully functional and is published on the app stores. The source and documentation in the ./docs directory for these are available in release branches (see below).

The legacy documentation for the published app is here

NOTE: The ./docs directory in this branch is under heavy development and is not updated for the refactor at this time.

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Published version for use is available at following branch:

• Last public release with React Native

Other unreleased development versions of this app could be useful for reference.

• Non-ascii characters fix and some transaction parsing
• Metadata types import and message parsing in RN
• Rust backend with RN frontend

Parity-Signer is GPL 3.0 licensed.