Restrict what is inputted in a text field
I have a survey that I will be sending out to internet users. I am pushing out an email with a unique ID for each person. They have to enter this to take the survey and once that ID is used they will ...
Forum Discussion
Using everyone on the internet and then needing this type of restriction is tough because you really can't control/prevent them from manipulating the URL.
Have you considered using an outside source, (Google Forms, Gravity Forms, etc) that has the features to limit one per entry?
Have you considered using an outside source, (Google Forms, Gravity Forms, etc) that has the features to limit one per entry?