We would very much like that to be possible. What worries us about such a test is program integrity. How can we know it's the actual applicant who took the test and pressed the button? As long as we're not able to confirm the identity of the applicant who took the test, we can't be sure we have the correct result for the correct candidate. It's an avenue we're exploring, and we would very much like to be able to use it.
On September 27th, 2016. See this statement in context.