# GasPass

GasPass is a feature that allows you to make transactions without worrying about gas fees by using coupons. By registering various coupons (vouchers) in the **“GasPass”** menu, the gas fees for transfers or swaps are automatically paid to the blockchain using your available coupons.

{% hint style="warning" %}
**GasPass currently supports the following networks:**

* Ethereum (ERC20)
* Base (BASE-ERC20)
* Solana (SPL-Token)
* Kaia (KAIA-KCT)
  {% endhint %}

## How to Register GasPass

Follow the steps below to register your GasPass:

<figure><img src="https://3989759490-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M50hxCNYm5Y8rdrUs_k-887967055%2Fuploads%2FX99NCtREkv5baYohlTBs%2FGasPass-01.png?alt=media&#x26;token=f0b246f0-6ee3-4ced-9ae6-b9c2ad015d54" alt=""><figcaption></figcaption></figure>

**1)** In the **My Wallet** tab, tap the **“GasPass”** button.

**2)** Click on **“Register Coupon.”**

**3)** Enter the **voucher code of the coupon you own**, and **click** **“Register.”**

**4)** A confirmation message will appear indicating that the coupon has been successfully registered.

<figure><img src="https://3989759490-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M50hxCNYm5Y8rdrUs_k-887967055%2Fuploads%2F3CnrPw4ySILPwUbm9VAy%2FGasPass-02.png?alt=media&#x26;token=3d06095f-2731-4119-8f48-c452644980f8" alt=""><figcaption></figcaption></figure>

Once a coupon has been successfully registered, you will see your **Total Gas Balance** displayed in the **GasPass** menu.

To view the details of a registered coupon, **click** the **“Active Coupons”** button.\
The **Coupon Details** screen will show the coupon’s **Registered amount**, **Used amount**, **Expiration date**, **Usage count**, and other relevant information.

## How to Send Coins Using GasPass

Sending coins with GasPass is no different from the usual method.

### Sending Coin

Please refer to [**this guide**](https://userguide.dcentwallet.com/coin-send-receive/send) to learn how to send coin.

<figure><img src="https://3989759490-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M50hxCNYm5Y8rdrUs_k-887967055%2Fuploads%2FYkfcncVkuctKOpgosrqh%2FGasPass-03.png?alt=media&#x26;token=a4a09193-3be7-47cc-9166-3e32c46aa7d1" alt=""><figcaption></figcaption></figure>

**1)** After entering the amount you want to send and setting the network fee, click the **"Next"** button.

**2) On the transaction review screen, GasPass is automatically applied, and the network fee will be deducted using the available coupon balance.** You can also manually disable GasPass if needed.&#x20;

Click the **"Send"** button to proceed.

**3)** If GasPass is applied, **you will first need to sign the transaction to automatically pay the network fee with the coupon.** Check the transaction details on your wallet and authenticate with your fingerprint or PIN.

<figure><img src="https://3989759490-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M50hxCNYm5Y8rdrUs_k-887967055%2Fuploads%2FbRwEEsNJzseVBFhAtjA6%2FGasPass-04.png?alt=media&#x26;token=278fcbf3-876e-4258-b72d-898782afefab" alt=""><figcaption></figcaption></figure>

**4)** You will then need to sign the transaction to send the coin. Please check the transaction details on your wallet and authenticate with your fingerprint or PIN.

**5)** Once the transaction has been sent to the blockchain, a confirmation message will appear in the mobile app. Tap the **“OK”** button to return to the main screen.

### Swap

Please refer to [**this guide**](https://userguide.dcentwallet.com/native-service/swap) to learn how to use Swap service.

<figure><img src="https://3989759490-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M50hxCNYm5Y8rdrUs_k-887967055%2Fuploads%2FDylwfleU153Of5S6nYF6%2FGasPass-05.png?alt=media&#x26;token=bc175398-4544-4cb7-8e2d-f2f4088fa1c7" alt=""><figcaption></figcaption></figure>

**1)** When using the swap service, **if you have a registered GasPass, it will be automatically applied on the estimate screen** after you enter the swap amount.

**2)** You can also confirm that GasPass is applied on the swap transaction review screen. If needed, you can manually disable GasPass. Click the **“Confirm”** button to proceed.

**3)** If GasPass is applied, **you will first need to sign the transaction to automatically pay the network fee with the coupon.** Check the transaction details on your wallet and authenticate with your fingerprint or PIN.

<figure><img src="https://3989759490-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M50hxCNYm5Y8rdrUs_k-887967055%2Fuploads%2FZNFSF45pxGHfxTrSwU5B%2FGasPass-06.png?alt=media&#x26;token=10a2b36a-575b-4d52-a858-5e9552837cb8" alt=""><figcaption></figcaption></figure>

**4)** You will then need to sign the transaction to send the coin. Please check the transaction details on your wallet and authenticate with your fingerprint or PIN.

**5)** Once the transaction data is sent to the blockchain, the mobile app will display the expected amount of tokens you will receive. Click the **“Complete”** button to return to the main screen.

## How to Check Transaction History with GasPass Applied

Please refer to [**this guide**](https://userguide.dcentwallet.com/coin-send-receive/checking-transaction-status-and-history) to learn how to check transaction history.

<figure><img src="https://3989759490-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M50hxCNYm5Y8rdrUs_k-887967055%2Fuploads%2FLWNPHcCNupko7Zso1dPq%2FGasPass-07.png?alt=media&#x26;token=02421b15-54f4-46bb-8db8-503c3c80ba75" alt=""><figcaption></figcaption></figure>

When a transaction is created with GasPass applied, the gas fee (network fee) is paid in advance to the blockchain using a coupon. Therefore, the transaction status will display **“Preparing Gas.”**\
In addition, the **TXID** will show the **issued coupon ID (gascouponid)**.

<figure><img src="https://3989759490-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M50hxCNYm5Y8rdrUs_k-887967055%2Fuploads%2FOZaCXORn4FkkDIMnYLpE%2FGasPass-08.png?alt=media&#x26;token=ac126bbe-4354-440e-acf2-201bae94f590" alt=""><figcaption></figcaption></figure>

Once the gas fee has been successfully paid with GasPass and the transaction is confirmed, the transaction status will update to **“Confirmed.”** The **TXID** will then be updated to the actual **transaction ID**.

## How to Check GasPass Usage History

<figure><img src="https://3989759490-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M50hxCNYm5Y8rdrUs_k-887967055%2Fuploads%2FzsQCqduXCuZaasqFzuTY%2FGasPass-09.png?alt=media&#x26;token=bdffe18a-884a-4ea3-990b-d6ec4b8f5708" alt=""><figcaption></figcaption></figure>

By clicking the **“Usage History”** button in the GasPass menu, you can view a detailed breakdown of gas fees deducted for each transaction.

{% hint style="warning" %}
**If multiple gas coupons are registered, they will be applied automatically starting with the one closest to expiration.**
{% endhint %}