I've designed a payment system that, generally gets a response quickly. However, if there is any delay at all, customers will click "Pay" again, thinking that they didn't hit it. This, of course, will cause duplicate transactions.
I'm looking for some sort of "Please wait while we process your request." message/decal/modal that freezes the screen while the payment is processing, and releases once a response comes back from the server. Any ideas/links to examples. I googled and searched the UI...and didn't find anything that I could use. It is likely I missed something. Thanks, Shadraq