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Device Detection

Customers are happier with device detection

Better user experiences with device detection

Great device detection provides your users the best experience when accessing your web site whether they're using tablets, feature phones, smartphones, TVs, or old fashioned big screen desktop and laptop computers.

51Degrees is the world's fastest and most accurate device detection solution. Here's why:

  • Fastest: Sub millisecond performance, peaking at more than 5,000,000 detections per second
  • Proven: Deployed on more than 1,500,000 web sites and rising
  • Comprehensive: 36,270 hardware devices and 511,739 combinations of browser, operating system and hardware, more than anyone else
  • Accurate: 99.9% detection accuracy

51Degrees ensures your customer's screen size doesn't get in the way of your brand conversations.

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How Device Detection Works


Request received by web site

Request for web page received by web site or content management system.


Web site detects device type

51Degrees client hosted high performance device detection uses finger prints (HTTP headers including user agents) relating to over 511,739 device, browser and operating system combinations to work out the type of device in less than 1 millisecond.


Web site responds with page optimised for the device type

Your web site returns a page optimised for the precise screen and device type ensuring maximum performance and the best user experience every time.

We've Found You...

You're using a desktop web browser, or a mobile device configured to pretend to be a desktop. Come back to this page using a mobile phone, tablet or TV and we'll tell you what it is, including pictures.

You can use this information to enhance your web site analysis tools, or provide optimised user experiences. Use the links on this page to find out how device detection improves web site performance and the simple steps needed to implement into your web site.

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Benefits of Device Detection

  • User Experience: Improved web site goal completion on every type of device through optimised processes and lighter weight page design for mobiles and tablets. Enables A/B testing including factors such as physical screen size.

  • Enhanced Analysis: Increased understanding of web site activity as physical screen size, price band and browser capabilities complement your existing web site analysis tools.

  • Easy Deployment: Simple implementation improves developer productivity, reduces testing time and ultimately speeds up time to market.


We Track Over 392,958 Device Combinations. Here's 5 of the Latest Devices...

About the Technology

  • Free Open Source: Permissive open source licencing (Mozilla Public Licence 2) provides full access to source code and permits commercial use.

  • Platforms: Native APIs for .NET, Java, PHP, C, Python and Perl are easy to deploy. Millions of web sites have already deployed.

  • Future Proof: Unlike competitor solutions built in the last decade when a few 1000 devices existed, 51Degrees' modern algorithms are designed to continuously deliver high performance as device combinations grow to a million and beyond.

  • Fastest: All detection performed on client equipment providing sub millisecond performance and negating the need for real time cloud detection services.

  • Content Management Systems: Integrates with more than 20 leading Content Management Systems making deployment and configuration a doddle.

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