Marrakech has hosted Gitex Africa, said to be Africa's largest tech show, for three days. On its final day, the fair ...

or a smart sensor in your car can warn you of a break-in even from across town. Sidewalk uses 900MHz radio signals and Bluetooth to create a wireless network that’s independent of your Wi-Fi.

First, an update on Smart. It’s no longer an offshoot of Mercedes making those tiny cars that can be parked sidewise along the street. Now it’s an ‘international brand’, a joint venture ...