Want some simple software created that allows a system builder to install it on a PC before it is sold customers. After a certain time, a pop up with a window that asks for a "payment received" code needs to be entered before the customer can use the system again. One this code is entered, the popup shutsdown.
This would obviously render the system unusable unless the customer pays the outstanding amount for the system.
However, i know what you're thinking. What about the customer reselling or reformatting the system? The systems are specifically build for commercial use and a reformat wouldn't be an option for the customer, nor would reselling it.
Any ideas anyone? Even if someone has the expertise to code something for me, please let me know. I only have a small budget so please be reasonable with cost.