ZEMAX licenses are available in two versions: standalone and network. A standalone (single user) license requires one USB or parallel hardware key per computer that runs ZEMAX. The standalone key must be physically moved between machines in order to run ZEMAX on a given machine.

The network license is a single USB hardware key that allows ZEMAX to run on multiple computers simultaneously. Network keys are available in 5, 10 and 25 user versions. Any number of users up to the maximum licenses may run ZEMAX at the same time, without moving the key around.

Installation of the network key is very simple. The same ZEMAX installation package and key driver are used as are used for the standalone key installation. The only differences are:

1. The key driver and ZEMAX software are installed on different machines, and
2. ZEMAX must be told where to 'look' to find the computer with the key.

If you have a standalone key, follow the installation instructions for the standalone key.