Thanks for contacting 51Degrees.
When performing a detection the 51Degrees API returns a match object. In this object there is a field called Match Method. This field will allow you to determine how confident the API is with the detection. The 4 methods are Exact, Nearest, Numeric and Closest. There is a fifth outcome as well called 'None' where the API has not been ale to find a match. This page on our site describes each method in detail: https://51degrees.com/support/docum...on/pattern
For an example on how to use the Match Methods, take a look at our Match Metrics example here: https://51degrees.com/Developers/Do...ch-Metrics
Let me know if you have any further questions.