How do you prevent multiple requests by one person?
It is quite difficult task. If you cannot do this most probably your service will go bankrupt after few days.
I spent about a month to write a heuristic statistical analyzer that detects fraudulent behavior and it already rejected thousands suspicious requests on my site, but even so it doesn't give 100% probability. Checking e-mail and IP is not enough definitely.
Technical savvy user can easily cheat you by registering many emails and requesting ticket via proxy or TOR node, diluting winning chance of legitimate users.
Bankrupt? How? Do you even understand how this lottery works? It is quite difficult task. If you cannot do this most probably your service will go bankrupt after few days.
I spent about a month to write a heuristic statistical analyzer that detects fraudulent behavior and it already rejected thousands suspicious requests on my site, but even so it doesn't give 100% probability. Checking e-mail and IP is not enough definitely.
Technical savvy user can easily cheat you by registering many emails and requesting ticket via proxy or TOR node, diluting winning chance of legitimate users.
