How do I install the NoTamperData add-on?
- Open your Google Form
- Click on the puzzle piece icon (Add-ons) in the top right
- Search for “NoTamperData” in the marketplace
- Click “Install” and accept the permissions
- Access the add-on from Add-ons → NoTamperData → Open
How do I enable automatic verification?
Once the add-on is installed:
- Open the NoTamperData sidebar (Add-ons → NoTamperData → Open)
- Click “Enable Automatic Verification”
- The status will change to “Enabled”
- All future form submissions will be automatically hashed and stored
How do I verify a form response?
You can verify responses in two ways:
- With the hash: Copy the hash from your records and paste it on the verification page
- With the content: Use the “Hash & Verify Content” option to generate a hash from the response data and verify it
Why isn't the add-on working?
Common solutions:
- Refresh the form page and try again
- Check your internet connection
- Ensure you have edit permissions for the form
- Try disabling and re-enabling automatic verification
- Clear your browser cache and cookies
What permissions does the add-on need?
NoTamperData requires minimal permissions:
- View and manage forms: To read form structure and responses for hashing
- Connect to external service: To send hashes to our verification servers
Privacy Note: We never store or have access to your actual form response data.
Why did verification fail?
Verification can fail if:
- The response was submitted before NoTamperData was enabled
- The hash was incorrectly copied
- The response data was modified after submission
- There was a network error during the original submission