96796 Ebook Activation Key Program

I need a way to protect my ebooks from being passed around after someone purchases them. I would like to have some kind of activation key generated each time someone purchases an ebook. An activation key is generated when someone purchases the ebook and will only work for his/her computer. If it's opened from a different computer, they will be re-directed to the website to purchase the ebook. If you can make this happen please place a bid. Thanks, Jasen