Vast majority of metadata checks determine phone owner: Turnbull

via Latest news http://zdnet.com.feedsportal.com/c/35462/f/675634/s/44b89d71/sc/15/l/0L0Szdnet0N0Carticle0Cvast0Emajority0Eof0Emetadata0Echecks0Edetermine0Ephone0Eowner0Eturnbull0C0Tftag0FRSSbaffb68/story01.htm