ToolJet/docs/versioned_docs/version-3.16.0-LTS/widgets/qr-scanner.md

---
id: qr-scanner
title: QR Scanner
---

# QR Scanner

Scan QR codes using device camera and hold the data they carry.

:::note Known Issue
You might have to stick to the Safari browser in IOS as camera access is restricted for third-party browsers.
:::

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## Events

| <div style={{ width:"100px"}}> Event </div> | <div style={{ width:"100px"}}> Description </div>             |
| :------------------------------------------ | :------------------------------------------------------------ |
| On detect                                   | Triggers whenever the component successfully scans a QR code. |

:::info
Check [Action Reference](/docs/actions/run-query) docs to get the detailed information about all the **Actions**.
:::

:::caution Debugging tip

Browser camera APIs restrict this component to only work in either `localhost` or `https`.

So if you're testing it out, be sure to either use `localhost` or `https`.
:::

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## Component Specific Actions (CSA)

There are currently no CSA (Component-Specific Actions) implemented to regulate or control the component.

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## Exposed Variables

| <div style={{ width:"100px"}}> Variables </div> | <div style={{ width:"200px"}}> Description </div>              | <div style={{ width:"135px"}}> How To Access </div>                                       |
| :---------------------------------------------- | :------------------------------------------------------------- | :---------------------------------------------------------------------------------------- |
| lastDetectedValue                               | Holds the data from the last QR code scanned by the component. | Accessible dynamically with JS (for e.g., `{{components.qrscanner1.lastDetectedValue}}`). |

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## General

### Tooltip

A Tooltip is often used to specify extra information about something when the user hovers the
mouse pointer over the component.

Under the <b>General</b> accordion, you can set the value in the string format.
Now hovering over the component will display the string as the tooltip.

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## Devices

| <div style={{ width:"100px"}}> Property </div> | <div style={{ width:"100px"}}> Description </div> | <div style={{ width:"135px"}}> Expected Value </div>                                                                              |
| :--------------------------------------------- | :------------------------------------------------ | :-------------------------------------------------------------------------------------------------------------------------------- |
| Show on desktop                                | Makes the component visible in desktop view.      | You can set it with the toggle button or dynamically configure the value by clicking on **fx** and entering a logical expression. |
| Show on mobile                                 | Makes the component visible in mobile view.       | You can set it with the toggle button or dynamically configure the value by clicking on **fx** and entering a logical expression. |

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---

## Styles

| <div style={{ width:"100px"}}> Style </div> | <div style={{ width:"100px"}}> Description </div>                                                                                                                                                                                                                          | <div style={{ width:"100px"}}> Default Value </div> |
| :------------------------------------------ | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------- |
| Visibility                                  | Toggle on or off to control the visibility of the component. You can programmatically change its value by clicking on the **fx** button next to it. If `{{false}}` the component will not be visible after the app is deployed.                                            | By default, it's set to `{{true}}`.                 |
| Disable                                     | This is `off` by default, toggle `on` the switch to lock the component and make it non-functional. You can also programmatically set the value by clicking on the **fx** button next to it. If set to `{{true}}`, the component will be locked and becomes non-functional. | By default, its value is set to `{{false}}`.        |

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