Engineers have developed a new ultrasound transducer, or probe, that could dramatically lower the cost of ultrasound scanners to as little as $100. Their patent-pending innovation -- no bigger than a Band-Aid -- is portable, wearable and can be powered by a smartphone.

The more attractive the image and design of the telephone, the stronger the emotional relationship that consumers are going to have with the product, which is a clear influence on their purchasing decision. After analysing the data collected, the experts indicated that technical characteristics and functionality are the next factors to influence the purchase of smartphones.

MobiLimb is a fake finger that plugs into a phone's USB port. It can provide extra interaction, including stroking your wrist and dragging itself across a table

The mobile is designed as a companion device for those who already own bigger smartphones.

Our level of alertness rises and falls over the course of a workday, sometimes causing our energy to drop and our minds to wander just as we need to perform important tasks. To help understand these patterns and improve productivity, researchers have developed a tool that tracks alertness by measuring pupil size, captured through a burst of photographs taken every time users unlock their smartphones.

The mobile is designed as a companion device for those who already own bigger smartphones.

Minuscule machines that act as sensors in smartphones and other devices can be made from crystals extracted from discarded wood instead of silicon