Memopol, by Estonian artist Timo Toots, maps your information field on big, customised displays.  Insert your ID card or passport into the machine to see what information about you is available on national and international databases and the Internet. Says the artist on his homepage: "Memopol enables us to make a thorough background check of ourselves, mirroring back to us all the data about us that is recorded."

For more on digital traces and how to better manage your 'digital shadows', see Tactical Tech's "Me and My Shadow" website.