# Guide of Cold wallet

What’s Cold Wallet?

* The cold wallet is also called an offline wallet. Import the keys into the cold wallet and keep offline to ensure the security of the assets.
* Cold wallet communicate with observe wallet through QR code, keys never connect to the net, which can effectively prevent hackers from stealing.

What should we prepare？

* An EOS account （with private key）
* A smartphone （with internet）
* A smartphone（Offline）

**Step 1: （online）Input your account to enter the Observe Mode**

**Step 2:（offline） Input your PK to enter the Cold Wallet**

How to use Cold Wallet？

(1) Transferring on the observation wallet

* Open the observation wallet, tab \[Transfer] on the \[Assets] page, fill in the required information, and tap OK to generate the cold wallet authorization QR code.
* Open the cold wallet and tap the \[Signature] button on the \[Wallets] page to scanning the code of authorization.
* Finally, completed the transfer operation on the observation wallet.

(2) Play DApp on the observation wallet

* Open the observation wallet, and enter any DApp such as \[EOS Airgrab], select one of the candy, and tab \[AirGrab] > \[Confirm] to generate the cold wallet authorization QR code.
* Open the cold wallet and tap the \[Signature] button on the \[Wallets] page to scanning the code of authorization.
* Finally, completed the grab operation on the observation wallet.

**Note:**

* With a cold wallet and an observation wallet, all operations under the regular wallet can be achieved.
* Except for downloading/updating the wallet, the cold wallet should always be offline.