New versions of PTAGIS tagging software P4 and interrogation file utility I5 have been released. These versions include updates and bug fixes as described below:


  • Upgraded libraries for Windows 11. If you have been experiencing crashing while running P4 on Windows 11, this version will likely address those issues.
  • Upgraded SQL Server 2014 Express to Service Pack 3.
  • Added support for the Biomark Electronic Measuring Board.


  • Added support for parsing short noise reports and including them in interrogation files.
  • Fixed a bug that allowed a Data Source to be deleted without first deleting an associated file.

These applications can be downloaded from the P4 software page and the I5 software page