You can start testing instantly. Plug in your eye tracker, invite observers to the test session and/or start the recording - and off you go.
No complex integrations or time-consuming setups. Use your favorite prototyping or design tool, or even a product that is live. As long as you can show it on a screen you can test it.
No need to haul around bulky, sensitive, or costly equipment. The only thing you need to bring is your eye tracker and computer, which gives you the flexibility to test anywhere.