Did you just find a download or a file on your computer that has a digital signature from N-trig? If so, please read on.
You will probably see N-trig when double-clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the additional details from the N-trig digital signature with the following steps:
Here's a screenshot of a file that has been digitally signed by N-trig:

As you can see in the screencap above, Windows reports that "This digital signature is OK". This implies that the file has been published by N-trig and that no one has tampered with the file.
If you click the View Certificate button shown in the screenshot above, you can view all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, and so on. You can also see the address for N-trig, such as the street name, city and country.
VeriSign Class 3 Code Signing 2009-2 CA and VeriSign Class 3 Code Signing 2004 CA has issued the N-trig certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the N-trig files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/50 | SensorInterfaceTrackCoreDLL.dll |
| 0/56 | SensorInterfaceTrackCoreDLL.dll |
| 0/56 | SensorInterfaceTrackCoreDLL.dll |
The detection percentage is based on the fact that I've collected 162 scan results for the N-trig files. 0 of these scan results came up with some sort of detection. You can review the full details of the scan reports by examining the files listed above.
The analysis is based on certificates with the following serial numbers: