Using QR codes to send information to a smartphone via its camera is common enough, but Casio has come up with a communication system that’s quite a bit more light-hearted. Based around an iOS app ...

If your Alexa device is blinking yellow, that means you have an unread message, and if it's flashing green, you have an ...

Light effects have always been popular. Now that LEDs are available in all sorts of shapes, sizes and colours for reasonable prices, a whole gamut of possibilities has become feasible. Examples are ...

Some Amazon Echo users are currently confused about why their Alexa is blinking. Their speaker shows either green, red, purple, or other colors. An Amazon Echo device is displayed at the Ford booth at ...