Good day Ben.

When the user is logged on you can execute a get list method on the users's username (retreived from the textbox on the login page) to get the signature and then populate a hidden (not visible) field with the result (output mappings). when you have the result you gan use that result in your filter to refine the data in your list view. Alternativeley you may ask the user/manager to enter the signature (If it is known) and use that in your filter. If you want to automate the process further you can use the system values of the user in order to populate the input mappings of the get list method after the login was successful.

Kind Regards 

Jacques

This should be easy.  First execute the SmartObject from the management site to look at the raw data returned.  Is it something like domainuser or user@domain?  The look at the form context menu and locate the user values under system.  One of those should match what you are seeing in SharePoint.  The just set your filter or input property on that value.

Good day Ben

I performed a test and can confirm that using the entire "Current User" system value from the context browser as per your screenshot will not allow your filter to filter the way you expect it to. In your current filter, the "Current User" section in the filters is what is avoiding your filter from working the way you want it to.

For some reason the "Current User" section is taking presidence over the other filtering objects presumably becuase the other filtering objects are actually children of the "Current User" system value category.  

Keeping the above in mind and focusing on the filter you already have, please could you remove the "Current User" rows from your filter.

Alternatively this filter should work just fine:

Should you feel that this post is of use and or an accurate solution to the raised question, I kindly encourage you to mark it as such using the 'Mark as Solution', 'Kudo' andor ‘Me Too’ options.

Kind Regards

Raymond