The Federal Trade Commission (FTC) yesterday announced two winners of its contest seeking ideas to block illegal robocalls. The two winners will receive $25,000 each. Both of their solutions "focus on intercepting and filtering out illegal prerecorded calls using technology to 'blacklist' robocaller phone numbers and 'whitelist" numbers associated with acceptable incoming calls. Both proposals also would filter out unapproved robocallers using a CAPTCHA-style test to prevent illegal calls from ringing through to a user," according to the FTC's press release. The FTC stated that "the challenge, designed to help solve this problem by spurring innovation in the marketplace, garnered nearly 800 eligible submissions."