[GRLUG] $50K Prize if You Find Way to Block Robocalls

[Tim Schmidt]

> The only way I could see to do this would be a rather large invasion of privacy

You're right.  It _is_ a huge invasion of privacy.  But it's one that
happened long ago.  The phone company (specifically - the one
servicing the robocaller) has all the data necessary to do this
already.  They're just not using it for this particular purpose.