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TECHNO-DESAPARECIDOS Every day huge heaps of electronic gadgets are lost on the back seats of taxis. 54,874mobile phones were left behind in London cabs (32,970 in taxis in Mumbai and 6,440 in Sydney), where, in the second half of 2006, 4,718 handheld devices and 923 USB sticks were also lost. London heads the list for missing laptops too – 3,179 of them; followed by Munich with 355and Mumbai with 349.