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FARO® Knowledge Base

Verifying Scans with the Scan Verification Tool



The FARO® Scan Verification Tool uses Focus or ScanPlan digital signatures to make sure the raw scans have not been modified. 

Verifying Scans

  1. Start the tool. The Welcome Screen appears.
  2. Drag a folder with scans into the ADD FOLDERS window, or click OPEN FOLDER and navigate to the scan folder.
    • FARO Focus scans: Drag the scan folder 0xx.fls or the folder containing multiple scans to FARO Scan Verification Tool.
    • ScanPlan Projects: Drag the project folder to FARO Scan Verification Tool.
  3. The scans will automatically be processed, and the result of the verification shown.

Verification Results

When scan verification is finished, the tool will display a list of the scans with status icons to the right. 

Icon Available for Scan Folders Available for Scan Files Status
  Yes Yes Unknown/not yet processed
SVTIcon2.png Yes Yes Success
SVTIcon3a.png Yes Yes Failure for whatever reason
SVTIcon4.png Yes No Unexpected file
SVTIcon5a.png Yes No Scan subfolder
SVTIcon6.png Yes No A hash/signature file; not part of the hashed scan

Select a scan and click SHOW REPORT to view a detailed report of the scan verification result.

You can save the displayed report as a text file by clicking Save and specifying the directory and filename of a report file. 

Manually Verifying a Scan

If you are using a Focus or ScanPlan file, you can manually verify the hash value on the main screen. When you open a Focus or ScanPlan file, you will see an additional field where you can enter the expected hash value for a file. 


If you clear the field or enter the first five correct values, the project will be marked as verified.

Note: The field does not auto-fill the expected hash value, and the report will show which characters were entered in the field.

Focus Scan Hash Value

  1. Open the scan preview.
  2. Click the info icon to open the Scan Property Page.
    FSVT Focus.png
  3. Click Scan Hash at the bottom of the Scan Property Page.
    FSVT Focus 2.png
  4. The scan hash value appears.
    FSVT Focus 3.png

ScanPlan Hash Value

  1. In the project view on your ScanPlan, click the upper, right menu.
  2. Click Sign Project.
    FSVT ScanPlan.png
  3. The project will be signed. An information box will appear containing the hash value.
    FSVT ScanPlan 2.png

Signature Verification Key

On startup, the default public key for RSA signature verification, installed together with the tool, is loaded. If the key file is missing or was corrupted, the tool detects this and prompts you to open another key file.


If the scan verification process is started without a valid key, a partial verification can be performed, but the actual digital signature verification will fail. 
Once a valid key is loaded, you can see its properties by clicking Tools > Signature-check key details