VINNI is a system for preventing illegal robocalls that relies on Verification of INcoming Number Identity. The VINNI system requires all callers wishing to reach a protected phone number to reveal their true originating number in order to complete their calls. By their very nature, illegal robocallers will be unwilling to reveal their true originating numbers and, thus, will be blocked from completing their calls. On the other hand, legal robocallers will have no reason not to reveal their true originating numbers and, thus, will still be able to complete their calls. The VINNI system relies on currently available technology and will require no major capital investments on the part of the users or service providers.

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