A cognitive ability level identification device is disclosed. The device is configured to present cognitive test to a user and to measure the user's response to the test. When the user fails the test, the device is configured to prevent the user from operating equipment and/or take any subsequent action, activity or process or to prevent the user from entering secured locations due to poor cognitive performance. A method for evaluating the user's cognitive performance is disclosed, by presenting to the user cognitive tests and comparing the user's actual performance to pre acquired cognitive performance baseline.