How can I add a field for a 'keyword' that must be filled in correctly before you can submit the form?  Like a password...

Hi there, @airhydropower!

Thanks for reaching out to us!

Kindly note that there are several ways to achieve what you're after, here are two ways:

1. Using conditional logic to hide all form fields including Submit button if a certain field value is not equal to "X". Here's my demo form for this method:

https://form.jotform.com/201543838928060

The code is 12345 which you have to enter to be able to fill and submit the form.

Related guide: How-to-Show-or-Hide-Fields-Base-on-User-s-Answer

2. Using the "Spreadsheet to Form" widget to validate user's input against a spreadsheet you've aready uploaded to the widget to check if user's input is a value in that spreadsheet or not.

Relate guide:

How-to-Use-the-Spreadsheet-to-Form-Widget

I hope I have been of any help.

Should you have any further inquiries, we will be more than happy to help.

Also, you should not be using words like "Password" or "Login", as this may result in your account suspension by our Phishing Detector Tool.