Qiao Zonglian, 84, shows her two-dimension code card in Dingxiang community of Hefei, capital of east China's Anhui Province, July 29, 2014. Dingxiang community in Hefei gave out the first batch of personal two-dimension code cards to people over 80 years old. The card can provide the holder's basic imformation when they get lost. (Xinhua/Liu Junxi)

Workers scan the two-dimension code card for Qiao Zonglian, an 84-year-old woman, in Dingxiang community of Hefei, capital of east China's Anhui Province, July 29, 2014. Dingxiang community in Hefei gave out the first batch of personal two-dimension code cards to people over 80 years old. The card can provide the holder's basic imformation when they get lost. (Xinhua/Liu Junxi)