BBC News 
March 20, 2013
Scientists say they have developed a tiny blood-testing device that sits under the skin and gives instant results via a mobile phone.
The Swiss team say the wireless prototype – half an inch (14mm) long – can simultaneously check for up to five different substances in the blood.
The data is sent to the doctor using radiowaves and Bluetooth technology.
The device’s developers hope it will be available to patients within four years.