Christine Ha, was chosen out of 30,000 other hopefuls to appear on the 2012 series of MasterChef US. She went on to beat 35 other contestants to win the series, her own cookbook deal and the $250,000 US prize. Christine can only see light and blurry shapes. She says "What I see can best be described as shadows and extreme blurriness like I'm eternally walking through a cloud."
Also on the programme we talk about the of website audio capchas. These are the anti-spam devices used by companies that we're confronted with when buying tickets, booking flights or signing up for services.
We discuss why we have them, Why some people find them difficult, are they getting harder to solve and what are the accessible alternatives?