Before flash memory became commonplace, people relied heavily on floppy disks to store their data. Dr Steve Bagley takes us through the basics of magnetic media. Space Carving: https://www.youtube.com/watch?v=cGs90KF4oTc Deep Learning: https://www.youtube.com/watch?v=l42lr8AlrHk Secure Web Browsing: https://www.youtube.com/watch?v=E_wX40fQwEA Anti Counterfeiting & Conductive Inks: https://www.youtube.com/watch?v=gQ0rdOvdS6M http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com/