Secret link to give customers in order to enter a competition on facebook?

[reeko]

Hi, I want to run a competition online to get my customers that visit the restaurant to receive a random code that they enter on facebook.

The code enables them to enter the competition ONCE, and then it gets deactivated..

The reason behind this is to stop those competition hunters online and I want to make sure to reward the regular and loyal customers that do come and eat here..

Is it possible to create a unique code in which customers enter on facebook to enter them in a draw to win or not?

Thanks!
The code is obtained OFFLINE at my restaurant (No way to obtain it online)!

[Daniel]

Its Possible But you Would Have to Create a HTML Code For it And you Would Have to Some How Add it in the FMBL App Box On Facebook