||Our system contains more than 150,000,000 unique HTTP headers including crawlers, apps and web browsers. Our device data team continually assign any header we receive more than 18 times to a hardware, software, browser and crawler profile.
1.75% of the total available headers are used with the Pattern method to achieve 99.9% or greater device detection accuracy when compared to the full data set. This approach minimises the amount of data which needs to be distributed allowing a much faster detection rate. Over 30,000,000 headers are used to populate the Trie method.
We also continue to check real devices and work with handset vendors to verify accuracy. Sometimes a few weeks are needed for a new device to appear in our system. Our customers can let us know if we’re getting something wrong via our open public forum