I have a page that verify information from my customers. The problem is simple and human, the customer must only click once and after their click there must open a animated layer with 'be patient' or something like that.
You can create a animated gif (a few words in dutch), a that gif-file in a layer to the page and add javascript to the page that accept only one click and open the layer.
You mean like there is a button for submitting the form and the people sometimes click multiple times on it to submit the form? So yeah I can implement a button in there that only allows people to click once on the form and stops them on the second time and the button's message could change to something like "Please wait!"