> ## Documentation Index
> Fetch the complete documentation index at: https://help.dingtalk.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Signature

> The Signature feature applies to approver or executor steps in an approval workflow. Users can preset a personal signature on the mobile app. When the workflow reaches a signature step, the approver is prompted to sign. This feature is currently available only on mobile.

This topic describes how to configure and use the signature feature for approval workflows.

## Configure Signature

<Steps>
  <Step title="Step 1">
    Sign in to the [YiDA workbench](https://www.yidaapps.com/workPlatform). Select the target app and go to the app's **Page Management** page.
  </Step>

  <Step title="Step 2">
    Select a workflow form, click the inverted triangle next to the edit option, and click **Workflow Design**.
  </Step>
</Steps>

3. Click **Global Settings**, select **Signature**, and turn on the Signature feature.
4. Select the steps where you want to enable the signature.

## Use Signature

Signature is currently supported only on mobile, not on PC. If you operate on a PC, you are prompted to scan a QR code with your phone to sign. After your first signature, subsequent approvals use it by default. To sign again, tap **Reset Signature** on the signing screen.