Parity Signer Mobile Application - Wiki Parity Tech Documentation

Parity Signer

Turn your smartphone into a hardware wallet

Parity Signer is a mobile application that turns a smartphone into a secure air-gapped wallet also called cold storage. It is meant to be used on a dedicated mobile phone, that will remain offline at any point in time. It means that, once the app has been installed, and the device turned offline, your can create Kusama or Ethereum accounts, sign transactions and transfer funds from and to these accounts without any sort of connectivity enabled on the device. Wifi, Mobile Network, Bluetooth must be shut down or even removed physically to ensure that the mobile phone containing these accounts will not be exposed to any online threat. Have a look at our tutorials to learn how to use Parity Signer together with Polkadot-js apps for Kusama or Parity Fether or MyCrypto for Ether.

Any data transfer from or to the app will happen using QR code scanning. By doing so, the most sensitive piece of information, the private keys, will never leave the phone. The Parity Signer Mobile app can be used to store any Ethereum account, this includes KSM, ETH, ETC as well as Ether from various testnets (Kovan, Ropsten…).

screenshot Parity Signer

Device security

Parity Signer is built to be used offline. The mobile device used to run the app will hold important information that needs to be kept securely stored. It is therefore advised to:

How to get it and use it?

Install the app

The app is available in beta for Android and iOs :

Please double check carefully the origin of the app, and make sure that the company distributing it is Parity Technologies. Usual security advice apply to this air-gapped wallet:

How to update Parity Signer securely

Once Parity Signer is installed, your device should never go online. This would put your private keys at threat. To update, you will need to :

  1. Make sure you possess the recovery phrase for each of your accounts. You can find it on Parity Signer by :
    • v4.0 choosing an identity > click the user icon at the top right > “Show Recovery Phrase”
    • v2.2 tapping an account > 3 dots menu at the top right > “Backup Recovery Phrase”
    • v2.0 tapping an account > tap on the account address > “Backup Recovery Phrase”
  2. Factory reset the device.
  3. Enable full-disk encryption on the device and set a strong password (might not be on by default, for example for older Android devices).
  4. Do not use any kind of biometrics such as fingerprint or face recognition for device decryption/unlocking, as those may be less secure than regular passwords.
  5. Install Parity Signer from the Apple store or Android store or download the apk from Parity Signer’s Github repository (make sure you are on the right website and verify the checksum)
  6. Once the app has been installed, enable airplane mode and make sure to switch off Wifi, Bluetooth, and any other connection ability the device has.
  7. Only charge the phone on a power outlet that is never connected to the internet. Only charge the phone with the manufacturer’s charging adapter. Do not charge the phone on public USB chargers.
  8. Recover your accounts.

What data does it collect?

None, it’s as simple as that. The Parity Signer Mobile Android and iOS apps do not send any sort of data to Parity Technologies or any partner and work completely offline once installed.