Saudi hackathon seeks high-tech fixes to hajj calamities Participants including Saudi women attend a hackathon in Jeddah, prior to the start of the annual Hajj pilgrimage in the holy city of Mecca. Around 3,000 participants attended the three-day "Hackathon event" in Jeddah, the government said, with the aim of exploring high-tech solutions to make Hajj pilgrimage more efficient and safe. IMAGES AND SOUNDBITES