The first African smartphone factory, where phones are made from scratch, opened this week in Rwanda. The smartphones are designed for the African market, so they are being made as affordable as possible, while being accessible and secure. Tunabot Professor Hilary Bart-Smith at the University of Virginia, USA went back to basics to develop a fast swimming robotic tuna - the tunabot. They took detailed anatomical data from the Yellow-finned tuna and Atlantic mackerel and 3D printed the fast tunabot. The tunabot swims faster than existing tunabots by increasing the frequency with which its tail beats. Tech to help deal with dementia An estimated 130 million of us could have dementia by 2050, but technology could help people live with the condition. Videos that pop up on your phone to help you perform everyday tasks like boiling the kettle or QR codes on your clothes that help others identify you and contact your family if you get lost are just some of the advances that Jason Hosken reports on.Ushahidi Ushahidi is Swahili for witness and it’s also the name of an open source software. It was originally created ten years ago to report reprisals and violence around elections. Since then it’s widened out into all kinds of crisis mapping – everything from monitoring natural disasters to illegal deforestation. Angela Odour Lungati is the recently appointed Executive Director at Ushahidi.Producer: Ania Lichtarowicz(Photo: MaraPhone factory. Credit: MaraPhone)