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layout default-layout
title Dynamsoft Barcode Reader Licensing - Main Page
description This is the main page of Dynamsoft Barcode Reader Licensing.
keywords license initialization, licensing
needAutoGenerateSidebar false

License Initialization

Get a Trial License

You can request a 30-day trial license via the Request a Trial License{:target="_blank"} link.

You can contact our support team via the Contacting Us{:target="_blank"} link when:

  • You want request for an Offline trial license.
  • Your license generation failed.

Get a Full License

Contact us to purchase a full license.

Set the License In the Code

The following shows how to set the license in the code.

>- JavaScript >- C >- C++ >- C# >- Java >- Android >- Objective-C >- Swift >- Python > > ```js // Option 1: Initialize using the RTU (Ready-To-Use) BarcodeScanner APIs const barcodeScanner = new Dynamsoft.BarcodeScanner({ license: "YOUR_LICENSE_KEY", }); // Option 2: Initialize the license using the Foundational APIs Dynamsoft.License.LicenseManager.initLicense("YOUR_LICENSE_KEY"); ``` > ```c char errorBuf[512]; DBR_InitLicense("YOUR-LICENSE-KEY", errorBuf, 512); void* barcodeReader = DBR_CreateInstance(); // add further process ``` > ```cpp int errorCode = 1; char errorMsg[512]; errorCode = CLicenseManager::InitLicense("YOUR-LICENSE-KEY", errorMsg, 512); if (errorCode != EC_OK) cout << "License initialization error: " << errorMsg << endl; CCaptureVisionRouter *cvRouter = new CCaptureVisionRouter; // add further process ``` > ```csharp int errorCode = 0; string errorMsg; errorCode = LicenseManager.InitLicense("--Enter Your License Key Here--", out errorMsg); if (errorCode != (int)EnumErrorCode.EC_OK && errorCode != (int)EnumErrorCode.EC_LICENSE_CACHE_USED) { Console.WriteLine("License initialization error: " + errorMsg); } else { CaptureVisionRouter cvRouter = new CaptureVisionRouter(); // add code for further process } ``` > ```java try { LicenseError licenseError = LicenseManager.initLicense("YOUR-LICENSE-KEY"); if (licenseError.getErrorCode() != EnumErrorCode.EC_OK) { System.out.println("License initialization failed: ErrorCode: " + licenseError.getErrorCode() + ", ErrorString: " + licenseError.getErrorString()); return; } } catch (LicenseException e) { System.out.println("License initialization failed: ErrorCode: " + e.getErrorCode() + ", ErrorString: " + e.getErrorString()); return; } // add further process ``` > ```java LicenseManager.initLicense("YOUR-LICENSE-KEY", this, (isSuccess, error) -> { if (!isSuccess) { error.printStackTrace(); } }); ``` > ```objc [DSLicenseManager initLicense:@"YOUR-LICENSE-KEY" verificationDelegate:self]; - (void)onLicenseVerified:(BOOL)isSuccess error:(nullable NSError *)error { if (!isSuccess && error != nil) { NSLog(@"error: %@", error); } } ``` > ```swift LicenseManager.initLicense("YOUR-LICENSE-KEY", verificationDelegate: self) func onLicenseVerified(_ isSuccess: Bool, error: Error?) { if !isSuccess { if let error = error { print("\(error.localizedDescription)") } } } ``` > ```python error_code, error_msg = LicenseManager.init_license("--Enter Your License Key Here--") if error_code != EnumErrorCode.EC_OK.value and error_code != EnumErrorCode.EC_LICENSE_CACHE_USED.value: print("License initialization error: " + error_msg) else: cvr_instance = CaptureVisionRouter() # add code for further process ```

If you are using a concurrent instance license, see [How to properly use concurrent instance license]({{ site.faq }}license/ensure-no-overuse.html){:target="_blank"} for more information.