By the way:
...The survey provider that was used, tracked the IP and Mac address (computer ID) of each applicant. ...
MAC is the address (let's say unique manufacturer, model and serial number) of the network adapter.
While it's possible to record the IP of a website visitor it is not possible to record his MAC address without further effort and even then it would be noticeable. IP is on layer 3 and MAC on layer 2. The only way to record the MAC address of a visitor is with some Internet Explorer activeX code, a java applet or something similar. It is not possible with javascript.
So how did you track the MAC addresses?