How to secure form from bots?

We are looking to use the forms to capture shop floor production data in our business.  I do not want our users to enter a password each time they fill in a form as it will take too long, but I am concerned about security and the chance of bots filling in the forms and us having dodgy data.

Are there any other ways we can lock forms down, for example - only allowing completion from certain IP addresses?

Thanks.

Unfortunately, you cannot lock the form by IP, but you can prevent bots from filling your form by:

1). Enabling the unique submission feature https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form

2). Enable Captcha 

3). Create a hidden field and create a condition if hidden field is filled then hide the submit button. Bots tends to fill all fields including hidden. By applying the condition to hide the submit button when hidden field is not empty, this prevents bots from automatically submitting the form.

Please try applying those suggestions to your form and let us know if you have any questions.