# DynamsoftLicense Module The License module is defined in the namespace `Dynamsoft.License`. It consists of the classes `LicenseModule` and `LicenseManager`. ## LicenseModule Class This class defines common functionality in the License module. At present, it has only one method. | Name | Description | | ------------------------------------------------------------- | ------------------------------------------ | | `static` [getVersion()](https://www.dynamsoft.com/capture-vision/docs/web/programming/javascript/api-reference/license/license-module-class.md#getversion) | Returns the version of the License module. | ## LicenseManager Class The `LicenseManager` class is responsible for the licensing of all functional modules in Dynamsoft Capture Vision architecture. The APIs for this class are: | API | Description | | ---------------------------------------------------------------------------- | ----------------------------------------------------------------------- | | `static` [getDeviceUUID](https://www.dynamsoft.com/capture-vision/docs/web/programming/javascript/api-reference/license/license-manager.md#getdeviceuuid) | Returns the unique identifier of the device. | | `static` [initLicense](https://www.dynamsoft.com/capture-vision/docs/web/programming/javascript/api-reference/license/license-manager.md#initlicense) | Initializes the license for the application using a license key. | | `static` [setDeviceFriendlyName](https://www.dynamsoft.com/capture-vision/docs/web/programming/javascript/api-reference/license/license-manager.md#setdevicefriendlyname) | Assigns a distinctive name to the device, correlating it with its UUID. |