Xiaomi unveils $13 smart band

Chinese mobile device maker Xiaomi has launched the Mi Band, a CNY79 (US$13) wristband that features sensors for health and fitness tracking and can be used to unlock the wearer’s Xiaomi smartphone via BLE.  “Future plans for the Mi Band include making it into a personal ID — so it can unlock your door when you come home, or switch on smart appliances and gadgets,” The Next Web reports.