Jamie Siminoff invented the first Wi-Fi video doorbell in his garage back in 2011… went on Shark Tank and got rejected … but that doorbell invention turned into Ring — the home-security giant that Amazon later bought for over a billion dollars! His book Ding Dong: The Untold Story of How Ring Went From Shark Tank Reject to Everyone’s Front Door, from Ring founder and Chief Inventor is available now on Amazon.