coondoggie writes: "The Federal Trade Commission today said the submission period for its Robocall Challenge had ended and it got 744 new ideas for ways to shut down the annoying automated callers. The FTC noted that the vast majority of telephone calls that deliver a prerecorded message trying to sell something to the recipient are illegal. The FTC regulates these calls under the Telemarketing Sales Rule and the Challenge was issued to developing technical or functional solutions and proofs of concepts that can block illegal robocalls which despite the agency's best efforts seem to be increasing."
Five is a sufficiently close approximation to infinity.
-- Robert Firth
"One, two, five."
-- Monty Python and the Holy Grail