The website in question has a sign up page.
When a user signs up, they need to enter some personal details and a mobile number. This mobile number is then verified via SMS and an activation code put back into the website.
There are systems in place to stop the same people signing up over and over, however sometimes they seem to fail.
It would appear that people are able to put certain characters in front of their mobile number and submit it multiple times. The website sees it as a different number each time, but it is essentially the same mobile number, maybe with a few spaces in front.
I need this system tightening up.
It will not be a difficult job for someone who knows asp.
We will need someone on hand to perform future changes to the site as well, and if we are happy with your work, will use you as our resource.
I believe that this project will just involve adding a few lines of code to one page of asp.