MVC Captcha: A step-by-step Integration Guide

Unlike Recaptcha the Stalker -- BotDetect CAPTCHA works in China! Licensable source-code; self-hosted -- doesn't stalk -- nor does it slurp your form-data! Think: GDPR & LGPD!

Click on the link below that matches your integration usage scenario:

..............................................................

MVC Core 2 Captcha

Step-1) Installation

Reference the BotDetect ASP.NET CAPTCHA library as described on the main product page:

Step-2) Displaying Captcha in a Form

Step-2.1) Register the BotDetectCaptcha.ashx Path

Add the highlighted lines into your app's Startup class (Startup.cs):

public class Startup
{
  public void Configure(IApplicationBuilder app, IHostingEnvironment env,
                        ILoggerFactory loggerFactory)
  {
    ...

    // configure Session middleware
    app.UseSession();

    // configure your application pipeline to use Captcha middleware
    // Important! UseCaptcha(...) must be called after the UseSession() call
    app.UseCaptcha(Configuration);

    ...
  }


  public void ConfigureServices(IServiceCollection services)
  {
    services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

    services.AddMemoryCache(); // Adds a default in-memory 
                                        // implementation of 
                                        // IDistributedCache

    // Add framework services.
    services.AddMvc();

    // Add Session services.
    services.AddSession(options =>
    {
      options.IdleTimeout = TimeSpan.FromMinutes(20);
      options.Cookie.IsEssential = true;
    });
  }
}

Step-2.2) Place Captcha in Your Form

Make the CaptchaTagHelper class available to all Razor views in your app, by adding the addTagHelper directive to the Views/_ViewImports.cshtml file:

@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
@addTagHelper "BotDetect.Web.Mvc.CaptchaTagHelper, BotDetect.Web.Mvc"

To the YourViewWithCaptcha.chtml file -- at the exact place where you want to be displaying captcha challenges -- add the <captcha> tag.

In order for captcha layout be displayed properly, add the captcha stylesheet to page header.

[…]
@section header {
  <environment names="Development,Staging,Production">
      <link href="@BotDetect.Web.CaptchaUrls.Absolute.LayoutStyleSheetUrl"
            rel="stylesheet" type="text/css" />
[…]
}

[…]

<label asp-for="CaptchaCode">Retype the code from the picture:</label>
<captcha id="ExampleCaptcha" user-input-id="CaptchaCode" />
<div class="actions">
<input asp-for="CaptchaCode" />
<input type="submit" value="Validate" />
<span asp-validation-for="CaptchaCode"></span>
@if ((Context.Request.Method == "POST") && ViewData.ModelState.IsValid)
{
  <span class="correct">Correct!</span>
}
</div>

[…]

Add the CaptchaCode property to Form's Model:

public string CaptchaCode { get; set; }

Step-3) Captcha Validation

Mark the protected Controller action with the CaptchaValidationActionFilter attribute to include Captcha validation in ModelState.IsValid checks:

using BotDetect.Web.Mvc;

[…]

[HttpPost]
[CaptchaValidationActionFilter("CaptchaCode", "ExampleCaptcha", "Wrong Captcha!")]
public ActionResult ExampleAction(ExampleModel model)
{
  if (!ModelState.IsValid)
  {  
    // TODO: Captcha validation failed, show error message      
  }  
  else
  {  
    // TODO: captcha validation succeeded; execute the protected action  

    // Reset the captcha if your app's workflow continues with the same view
    MvcCaptcha.ResetCaptcha("ExampleCaptcha");     
  }

Step-4) Configuring the Other ASP.NET Captcha Options

All BotDetect ASP.NET CAPTCHA Traditional API configuration options are described in the Traditional API configuration options page.

[back to the top of mvc core 2 section]

[back to top of page]

..............................................................

MVC Core 1 Captcha

Step-1) Installation

Reference the BotDetect ASP.NET CAPTCHA library as described on the main product page:

Step-2) Displaying Captcha in a Form

Step-2.1) Register the BotDetectCaptcha.ashx Path

Add the highlighted lines into your app's Startup class (Startup.cs):

public class Startup
{
  public void Configure(IApplicationBuilder app, IHostingEnvironment env,
                        ILoggerFactory loggerFactory)
  {
    ...

    // configure Session middleware
    app.UseSession();

    // configure your application pipeline to use Captcha middleware
    // Important! UseCaptcha(...) must be called after the UseSession() call
    app.UseCaptcha(Configuration);

    ...
  }


  public void ConfigureServices(IServiceCollection services)
  {
    services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

    services.AddMemoryCache(); // Adds a default in-memory 
                                        // implementation of 
                                        // IDistributedCache

    // Add framework services.
    services.AddMvc();

    // Add Session services.
    services.AddSession(options =>
    {
      options.IdleTimeout = TimeSpan.FromMinutes(20);
    });
  }
}

Step-2.2) Place Captcha in Your Form

Make the CaptchaTagHelper class available to all Razor views in your app, by adding the addTagHelper directive to the Views/_ViewImports.cshtml file:

@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
@addTagHelper "BotDetect.Web.Mvc.CaptchaTagHelper, BotDetect.Web.Mvc"

To the YourViewWithCaptcha.chtml file -- at the exact place where you want to be displaying captcha challenges -- add the <captcha> tag.

In order for captcha layout be displayed properly, add the captcha stylesheet to page header.

[…]
@section header {
  <environment names="Development,Staging,Production">
      <link href="@BotDetect.Web.CaptchaUrls.Absolute.LayoutStyleSheetUrl"
            rel="stylesheet" type="text/css" />
[…]
}

[…]

<label asp-for="CaptchaCode">Retype the code from the picture:</label>
<captcha id="ExampleCaptcha" user-input-id="CaptchaCode" />
<div class="actions">
<input asp-for="CaptchaCode" />
<input type="submit" value="Validate" />
<span asp-validation-for="CaptchaCode"></span>
@if ((Context.Request.Method == "POST") && ViewData.ModelState.IsValid)
{
  <span class="correct">Correct!</span>
}
</div>

[…]

Add the CaptchaCode property to Form's Model:

public string CaptchaCode { get; set; }

Step-3) Captcha Validation

Mark the protected Controller action with the CaptchaValidationActionFilter attribute to include Captcha validation in ModelState.IsValid checks:

using BotDetect.Web.Mvc;

[…]

[HttpPost]
[CaptchaValidationActionFilter("CaptchaCode", "ExampleCaptcha", "Wrong Captcha!")]
public ActionResult ExampleAction(ExampleModel model)
{
  if (!ModelState.IsValid)
  {  
    // TODO: Captcha validation failed, show error message      
  }  
  else
  {  
    // TODO: captcha validation succeeded; execute the protected action  

    // Reset the captcha if your app's workflow continues with the same view
    MvcCaptcha.ResetCaptcha("ExampleCaptcha");     
  }

Step-4) Configuring the Other ASP.NET Captcha Options

All BotDetect ASP.NET CAPTCHA Traditional API configuration options are described in the Traditional API configuration options page.

[back to the top of mvc core 1 section]

[back to top of page]

..............................................................

MVC 5 Captcha

Step-1) Installation

Reference the BotDetect ASP.NET CAPTCHA library as described on the main product page:

Step-2) Displaying Captcha in a Form

Step-2.1) Register the BotDetectCaptcha.ashx Path

Exclude BotDetect paths from ASP.NET MVC Routing:

public static void RegisterRoutes(RouteCollection routes)
{
  routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

  // BotDetect requests must not be routed
  routes.IgnoreRoute("{*botdetect}",
    new { botdetect = @"(.*)BotDetectCaptcha\.ashx" });

  […]

Update your application configuration (the web.config file):

<system.web>
  <httpHandlers>
    <!-- Register the HttpHandler used for BotDetect Captcha 
      requests -->
    <add verb="GET" path="BotDetectCaptcha.ashx"
      type="BotDetect.Web.CaptchaHandler, BotDetect"/>
  </httpHandlers>
  <!-- Register a custom SessionIDManager for BotDetect Captcha 
    requests -->
  <sessionState mode="InProc" cookieless="AutoDetect" timeout="20"
    sessionIDManagerType="BotDetect.Web.CustomSessionIdManager, BotDetect"/>
</system.web>
<system.webServer>
  <validation validateIntegratedModeConfiguration="false"/>
  <handlers>
    <!-- Register the HttpHandler used for BotDetect Captcha 
      requests (IIS 7.0+) -->
    <remove name="BotDetectCaptchaHandler"/>
    <add name="BotDetectCaptchaHandler" preCondition="integratedMode"
      verb="GET" path="BotDetectCaptcha.ashx"
      type="BotDetect.Web.CaptchaHandler, BotDetect"/>
  </handlers>
</system.webServer>

Step-2.2) Place Captcha in Your Form

In the Forms's View code: import the BotDetect namespace, include BotDetect styles in page <head>, create a MvcCaptcha object and pass it to the Captcha HtmlHelper:

@using BotDetect.Web.Mvc;

[…]

  <link
    href="@BotDetect.Web.CaptchaUrls.Absolute.LayoutStyleSheetUrl"
    rel="stylesheet" type="text/css" />
</head>

[…]

@{ 
MvcCaptcha exampleCaptcha = new MvcCaptcha("ExampleCaptcha");
exampleCaptcha.UserInputID = "CaptchaCode"; 
}
@Html.Captcha(exampleCaptcha)
@Html.TextBox("CaptchaCode")

Add the CaptchaCode property to Form's Model:

public string CaptchaCode { get; set; }

Step-3) Captcha Validation

Mark the protected Controller action with the CaptchaValidationActionFilter attribute to include Captcha validation in ModelState.IsValid checks:

using BotDetect.Web.Mvc;

[…]

[HttpPost]
[CaptchaValidationActionFilter("CaptchaCode", "ExampleCaptcha", "Wrong Captcha!")]
public ActionResult ExampleAction(ExampleModel model)
{
  if (!ModelState.IsValid)
  {
    // TODO: Captcha validation failed, show error message
  }
  else
  {
    // TODO: captcha validation succeeded; execute the protected action

    // Reset the captcha if your app's workflow continues with the same view
    MvcCaptcha.ResetCaptcha("ExampleCaptcha");
  }

Step-4) Configuring the Other ASP.NET Captcha Options

All BotDetect ASP.NET CAPTCHA Traditional API configuration options are described in the Traditional API configuration options page.

[back to the top of mvc 5 section]

[back to top of page]

..............................................................

MVC 4 Captcha

Step-1) Installation

Reference the BotDetect ASP.NET CAPTCHA library as described on the main product page:

Step-2) Displaying Captcha in a Form

Step-2.1) Register the BotDetectCaptcha.ashx Path

Exclude BotDetect paths from ASP.NET MVC Routing:

public static void RegisterRoutes(RouteCollection routes)
{
  routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

  // BotDetect requests must not be routed
  routes.IgnoreRoute("{*botdetect}",
    new { botdetect = @"(.*)BotDetectCaptcha\.ashx" });

  […]

Update your application configuration (the web.config file):

<system.web>
  <httpHandlers>
    <!-- Register the HttpHandler used for BotDetect Captcha 
      requests -->
    <add verb="GET" path="BotDetectCaptcha.ashx"
      type="BotDetect.Web.CaptchaHandler, BotDetect"/>
  </httpHandlers>
  <!-- Register a custom SessionIDManager for BotDetect Captcha 
    requests -->
  <sessionState mode="InProc" cookieless="AutoDetect" timeout="20"
    sessionIDManagerType="BotDetect.Web.CustomSessionIdManager, BotDetect"/>
</system.web>
<system.webServer>
  <validation validateIntegratedModeConfiguration="false"/>
  <handlers>
    <!-- Register the HttpHandler used for BotDetect Captcha 
      requests (IIS 7.0+) -->
    <remove name="BotDetectCaptchaHandler"/>
    <add name="BotDetectCaptchaHandler" preCondition="integratedMode"
      verb="GET" path="BotDetectCaptcha.ashx"
      type="BotDetect.Web.CaptchaHandler, BotDetect"/>
  </handlers>
</system.webServer>

Step-2.2) Place Captcha in Your Form

In the Forms's View code: import the BotDetect namespace, include BotDetect styles in page <head>, create a MvcCaptcha object and pass it to the Captcha HtmlHelper:

In the Forms's View code: import the BotDetect namespace, include BotDetect styles in page <head>, create a MvcCaptcha object and pass it to the Captcha HtmlHelper:

<%@ Import Namespace="BotDetect.Web.Mvc" %>

[…]

  <link
    href="<%: Url.Content("~/" + BotDetect.Web.CaptchaUrls.LayoutStyleSheetUrl) %>"
    rel="stylesheet" type="text/css" />
</head>

[…]

<%
    MvcCaptcha exampleCaptcha = new MvcCaptcha("ExampleCaptcha");
    exampleCaptcha.UserInputID = "CaptchaCode";
%>
<%: Html.Captcha(exampleCaptcha) %>
<%: Html.TextBox("CaptchaCode") %>

Add the CaptchaCode property to Form's Model:

public string CaptchaCode { get; set; }

Step-3) Captcha Validation

Mark the protected Controller action with the CaptchaValidationActionFilter attribute to include Captcha validation in ModelState.IsValid checks:

using BotDetect.Web.Mvc;

[…]

[HttpPost]
[CaptchaValidationActionFilter("CaptchaCode", "ExampleCaptcha", "Wrong Captcha!")]
public ActionResult ExampleAction(ExampleModel model)
{
  if (!ModelState.IsValid)
  {
    // TODO: Captcha validation failed, show error message
  }
  else
  {
    // TODO: captcha validation succeeded; execute the protected action

    // Reset the captcha if your app's workflow continues with the same view
    MvcCaptcha.ResetCaptcha("ExampleCaptcha");
  }

Step-4) Configuring the Other ASP.NET Captcha Options

All BotDetect ASP.NET CAPTCHA Traditional API configuration options are described in the Traditional API configuration options page.

[back to the top of mvc 4 section]

[back to top of page]

..............................................................

MVC 3 Captcha

Step-1) Installation

Reference the BotDetect ASP.NET CAPTCHA library as described on the main product page:

Step-2) Displaying Captcha in a Form

Step-2.1) Register the BotDetectCaptcha.ashx Path

Exclude BotDetect paths from ASP.NET MVC Routing:

public static void RegisterRoutes(RouteCollection routes)
{
  routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

  // BotDetect requests must not be routed
  routes.IgnoreRoute("{*botdetect}",
    new { botdetect = @"(.*)BotDetectCaptcha\.ashx" });

  […]

Update your application configuration (the web.config file):

<system.web>
  <httpHandlers>
    <!-- Register the HttpHandler used for BotDetect Captcha 
      requests -->
    <add verb="GET" path="BotDetectCaptcha.ashx"
      type="BotDetect.Web.CaptchaHandler, BotDetect"/>
  </httpHandlers>
  <!-- Register a custom SessionIDManager for BotDetect Captcha 
    requests -->
  <sessionState mode="InProc" cookieless="AutoDetect" timeout="20"
    sessionIDManagerType="BotDetect.Web.CustomSessionIdManager, BotDetect"/>
</system.web>
<system.webServer>
  <validation validateIntegratedModeConfiguration="false"/>
  <handlers>
    <!-- Register the HttpHandler used for BotDetect Captcha 
      requests (IIS 7.0+) -->
    <remove name="BotDetectCaptchaHandler"/>
    <add name="BotDetectCaptchaHandler" preCondition="integratedMode"
      verb="GET" path="BotDetectCaptcha.ashx"
      type="BotDetect.Web.CaptchaHandler, BotDetect"/>
  </handlers>
</system.webServer>

Step-2.2) Place Captcha in Your Form

In the Forms's View code: import the BotDetect namespace, include BotDetect styles in page <head>, create a MvcCaptcha object and pass it to the Captcha HtmlHelper:

In the Forms's View code: import the BotDetect namespace, include BotDetect styles in page <head>, create a MvcCaptcha object and pass it to the Captcha HtmlHelper:

<%@ Import Namespace="BotDetect.Web.Mvc" %>

[…]

  <link
    href="<%: Url.Content("~/" + BotDetect.Web.CaptchaUrls.LayoutStyleSheetUrl) %>"
    rel="stylesheet" type="text/css" />
</head>

[…]

<%
    MvcCaptcha exampleCaptcha = new MvcCaptcha("ExampleCaptcha");
    exampleCaptcha.UserInputID = "CaptchaCode";
%>
<%: Html.Captcha(exampleCaptcha) %>
<%: Html.TextBox("CaptchaCode") %>

Add the CaptchaCode property to Form's Model:

public string CaptchaCode { get; set; }

Step-3) Captcha Validation

Mark the protected Controller action with the CaptchaValidationActionFilter attribute to include Captcha validation in ModelState.IsValid checks:

using BotDetect.Web.Mvc;

[…]

[HttpPost]
[CaptchaValidationActionFilter("CaptchaCode", "ExampleCaptcha", "Wrong Captcha!")]
public ActionResult ExampleAction(ExampleModel model)
{
  if (!ModelState.IsValid)
  {
    // TODO: Captcha validation failed, show error message
  }
  else
  {
    // TODO: captcha validation succeeded; execute the protected action

    // Reset the captcha if your app's workflow continues with the same view
    MvcCaptcha.ResetCaptcha("ExampleCaptcha");
  }

Step-4) Configuring the Other ASP.NET Captcha Options

All BotDetect ASP.NET CAPTCHA Traditional API configuration options are described in the Traditional API configuration options page.

[back to the top of mvc 3 section]

[back to top of page]

..............................................................

MVC 2 Captcha

Step-1) Installation

Reference the BotDetect ASP.NET CAPTCHA library as described on the main product page:

Step-2) Displaying Captcha in a Form

Step-2.1) Register the BotDetectCaptcha.ashx Path

Exclude BotDetect paths from ASP.NET MVC Routing:

public static void RegisterRoutes(RouteCollection routes)
{
  routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

  // BotDetect requests must not be routed
  routes.IgnoreRoute("{*botdetect}",
    new { botdetect = @"(.*)BotDetectCaptcha\.ashx" });

  […]

Update your application configuration (the web.config file):

<system.web>
  <httpHandlers>
    <!-- Register the HttpHandler used for BotDetect Captcha 
      requests -->
    <add verb="GET" path="BotDetectCaptcha.ashx"
      type="BotDetect.Web.CaptchaHandler, BotDetect"/>
  </httpHandlers>
  <!-- Register a custom SessionIDManager for BotDetect Captcha 
    requests -->
  <sessionState mode="InProc" cookieless="AutoDetect" timeout="20"
    sessionIDManagerType="BotDetect.Web.CustomSessionIdManager, BotDetect"/>
</system.web>
<system.webServer>
  <validation validateIntegratedModeConfiguration="false"/>
  <handlers>
    <!-- Register the HttpHandler used for BotDetect Captcha 
      requests (IIS 7.0+) -->
    <remove name="BotDetectCaptchaHandler"/>
    <add name="BotDetectCaptchaHandler" preCondition="integratedMode"
      verb="GET" path="BotDetectCaptcha.ashx"
      type="BotDetect.Web.CaptchaHandler, BotDetect"/>
  </handlers>
</system.webServer>

Step-2.2) Place Captcha in Your Form

In the Forms's View code: import the BotDetect namespace, include BotDetect styles in page <head>, create a MvcCaptcha object and pass it to the Captcha HtmlHelper:

<%@ Import Namespace="BotDetect.Web.Mvc" %>

[…]

  <link
    href="<%: Url.Content("~/" + BotDetect.Web.CaptchaUrls.LayoutStyleSheetUrl) %>"
    rel="stylesheet" type="text/css" />
</head>

[…]

<%
    MvcCaptcha exampleCaptcha = new MvcCaptcha("ExampleCaptcha");
    exampleCaptcha.UserInputID = "CaptchaCode";
%>
<%: Html.Captcha(exampleCaptcha) %>
<%: Html.TextBox("CaptchaCode") %>

Add the CaptchaCode property to Form's Model:

public string CaptchaCode { get; set; }

Step-3) Captcha Validation

Mark the protected Controller action with the CaptchaValidationActionFilter attribute to include Captcha validation in ModelState.IsValid checks:

using BotDetect.Web.Mvc;

[…]

[HttpPost]
[CaptchaValidationActionFilter("CaptchaCode", "ExampleCaptcha", "Wrong Captcha!")]
public ActionResult ExampleAction(ExampleModel model)
{
  if (!ModelState.IsValid)
  {
    // TODO: Captcha validation failed, show error message
  }
  else
  {
    // TODO: captcha validation succeeded; execute the protected action

    // Reset the captcha if your app's workflow continues with the same view
    MvcCaptcha.ResetCaptcha("ExampleCaptcha");
  }

Step-4) Configuring the Other ASP.NET Captcha Options

All BotDetect ASP.NET CAPTCHA Traditional API configuration options are described in the Traditional API configuration options page.

[back to the top of mvc 2 section]

[back to top of page]

..............................................................

MVC 1 Captcha

Step-1) Installation

Reference the BotDetect ASP.NET CAPTCHA library as described on the main product page:

Step-2) Displaying Captcha in a Form

Step-2.1) Register the BotDetectCaptcha.ashx Path

Exclude BotDetect paths from ASP.NET MVC Routing:

public static void RegisterRoutes(RouteCollection routes)
{
  routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

  // BotDetect requests must not be routed
  routes.IgnoreRoute("{*botdetect}",
    new { botdetect = @"(.*)BotDetectCaptcha\.ashx" });

  […]

Update your application configuration (the web.config file):

<system.web>
  <httpHandlers>
    <!-- Register the HttpHandler used for BotDetect Captcha 
      requests -->
    <add verb="GET" path="BotDetectCaptcha.ashx"
      type="BotDetect.Web.CaptchaHandler, BotDetect"/>
  </httpHandlers>
  <!-- Register a custom SessionIDManager for BotDetect Captcha 
    requests -->
  <sessionState mode="InProc" cookieless="AutoDetect" timeout="20"
    sessionIDManagerType="BotDetect.Web.CustomSessionIdManager, BotDetect"/>
</system.web>
<system.webServer>
  <validation validateIntegratedModeConfiguration="false"/>
  <handlers>
    <!-- Register the HttpHandler used for BotDetect Captcha 
      requests (IIS 7.0+) -->
    <remove name="BotDetectCaptchaHandler"/>
    <add name="BotDetectCaptchaHandler" preCondition="integratedMode"
      verb="GET" path="BotDetectCaptcha.ashx"
      type="BotDetect.Web.CaptchaHandler, BotDetect"/>
  </handlers>
</system.webServer>

Step-2.2) Place Captcha in Your Form

In the Forms's View code: import the BotDetect namespace, include BotDetect styles in page <head>, create a MvcCaptcha object and pass it to the Captcha HtmlHelper:

<%@ Import Namespace="BotDetect.Web.Mvc" %>

[…]

  <link
    href="<%: Url.Content("~/" + BotDetect.Web.CaptchaUrls.LayoutStyleSheetUrl) %>"
    rel="stylesheet" type="text/css" />
</head>

[…]

<%
    MvcCaptcha exampleCaptcha = new MvcCaptcha("ExampleCaptcha");
    exampleCaptcha.UserInputID = "CaptchaCode";
%>
<%= Html.Captcha(exampleCaptcha) %>
<%= Html.TextBox("CaptchaCode") %>

Add the CaptchaCode property to Form's Model:

public string CaptchaCode { get; set; }

Step-3) Captcha Validation

Mark the protected Controller action with the CaptchaValidationActionFilter attribute to include Captcha validation in ModelState.IsValid checks:

using BotDetect.Web.Mvc;

[…]

[HttpPost]
[CaptchaValidationActionFilter("CaptchaCode", "ExampleCaptcha", "Wrong Captcha!")]
public ActionResult ExampleAction(ExampleModel model)
{
  if (!ModelState.IsValid)
  {
    // TODO: Captcha validation failed, show error message
  }
  else
  {
    // TODO: captcha validation succeeded; execute the protected action

    // Reset the captcha if your app's workflow continues with the same view
    MvcCaptcha.ResetCaptcha("ExampleCaptcha");
  }

Step-4) Configuring the Other ASP.NET Captcha Options

All BotDetect ASP.NET CAPTCHA Traditional API configuration options are described in the Traditional API configuration options page.

[back to the top of mvc 1 section]

[back to top of page]

Current BotDetect Versions

Popular Content

© Captcha, Inc. 2004-2022. All rights reserved.

BotDetect, BotDetect CAPTCHA, Lanap, Lanap CAPTCHA, Lanap BotDetect, Lanap BotDetect CAPTCHA, Lanapsoft, Lanapsoft CAPTCHA, Lanapsoft BotDetect, Lanapsoft BotDetect CAPTCHA, and Lanap Software are trademarks of Captcha, Inc. All other product, brand, and company names are mentioned for identification purposes only and are trademarks or registered trademarks of their respective owners.

Captcha, Inc. -- formerly: Lanapsoft, Inc. / Lanap, Inc.