Tinfoil: Convert your old smartphone in a hardware wallet
Tinfoil lets you convert an old smartphone into a secure cryptocurrency hardware wallet. Tinfoil lets you keep your private keys in a offline device, and easilly operate with them in a safe way. All communication is done via auditable QR codes.
How to install
- (Optional) - Do a factory reset of your smartphone
- Install Tinfoil app
- Switch on airplane mode
How to transact
You will need an online device (phone or laptop) in addition to your offline smartphone.
|Generate a transaction using the online device. You can use the Tinfoil transaction builder|
|Scan the transaction with your Tinfoil device|
|Check transaction details and sign the transaction|
|Scan the signed transaction with the online device, and boardcast to the network.|
- Import wallets (mnemonic and WIF), restore backups.
- Litecoin, Ethereum support
Other security tips
- Keep your wallets paper backups in a safe place. Keep redundant backups. The paper backup encryption is easy to brute-force.
- Don't charge your Tinfoil device in public USB ports, use a charger you trust, or a power only USB cable.
- Keep your Tinfoil device safe, the encrypted private keys can theoretically be extracted if you have the device.
- Switch your Tinfoil device off when you are not using it, and if you can, remove the battery.