Tomcat server distribution license key
<p>I have a web application which is running on tomcat. I need to distribute it and install on many different servers. Some of these servers are not connected to the internet. I have to give this software to reseller companies who will install it in different locations. </p>

<p>Problem :: What is the best way I can keep track of how many machines my software is installed so that I know I am getting my licensing fee.</p>

<p>There are couple of approaches like 
1.  mac addr
2.  Key value</p>

<p>but both the above are very easy to crack. </p>

<p>thank you 
Firemonk </p>
