Why BotDetect ASP.NET CAPTCHA?

BotDetect is unique among Captcha solutions in offering many Captcha image and sound styles. While each of them is easily comprehensible to human users, randomly using multiple Captcha generation algorithms makes the Captcha challenge practically impossible to pass automatically.

BotDetect 是唯一解決方案中提供很多的驗證碼圖像和聲音樣式之間的驗證碼

BotDetect ASP.NET CAPTCHA Features

• 60 安全 & 可讀驗證碼圖像樣式
• 10 安全 & 可訪問音訊驗證碼聲音樣式
• 當地語系化的驗證碼生成，使用各種 Unicode 字元集和可下載多語言聲音發音
• 自訂驗證碼圖像大小、 格式、 顏色方案......
• 自訂驗證碼的代碼長度、 樣式、 字元集、 超時、 生成代碼過濾......
• 許多其他隨機播放 & 自訂選項
• Produces XHTML 1.1 Strict, Section 508 and WCAG AAA compliant markup
• Visual Studio.NET 2015, 2013, 2012, 2010, 2008, 2005和 2003支援
• 信任環境支援共用伺服器
• 與 ASP.NET WebForms 和 ASP.NET MVC 應用程式完全相容
• 與 ASP.NET Ajax 和 jQuery Ajax 驗證完全相容
• 與 SharePoint 伺服器完全相容
• 在自 2001 年以來發佈的 IE、 火狐瀏覽器、 Chrome、 Safari 和 Opera 瀏覽器中進行測試。
• 完全支援所有 Android & iOS 設備
   

Examples

BotDetect ASP.NET CAPTCHA 系統需求

* 'Officially Supported Browsers' are those browsers for which we do the testing in order to ensure that both the image and audio captcha options are working properly.
Nonetheless, both the image and audio captcha options are working properly in the most of non-archaic
** browsers anyway -- officially-supported, or not -- while the image captcha option alone works in all of them!
If you find our 'Officially Supported Browsers' policy too-restrictive check Recaptcha the Stalker's one that says:

• We support the two most recent major versions of the following:
• desktop (Windows, Linux, Mac): Chrome, Firefox, Safari, IE
• mobile: Chrome, Safari, Android native browser (4.0+)

We guess that after checking the Recaptcha's policy -- you will consider ours as the accommodative one :).

**    Archaic browsers? At present, our 'Archaic Browsers' policy works this way:

• Those last remaining few real humans still browsing around using the WinXP should update their browsers to the latest version that still works on the XP.

Or, in the less nice words:

• If those last remaining few laggards cannot be bothered to update their browsers -- we cannot be bothered neither -- nor you should be!
• Half of the Internet is broken for them since years ago anyway -- and they do not seem to care!

Full support for all Android & iOS devices

BotDetect ASP.NET CAPTCHA audio now works on Android and iOS devices. Unlike other Captchas, sounds are played directly on the form page, without opening the media player app

Buy BotDetect CAPTCHA Licenses
BotDetect Captcha is available under several major licensing models

* 1 Domain license = unlimited Website licenses within a single domain.