The RoboRouter system is similair to the CAPTCHA system, however, rather than the users filling in radom words, they are asked to answer random math questions.
It is a simple phone app that re-routes unknown numbers as well as numbers not in your contact list.
If the unknown number answers the question correctly, the call will be allowed through the RoboRouter system to the users phone. If the math question is answered incorrectly, the RoboRouter system will not allow the call to go through.
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