Now, smartwatch that recognises gestures and objects - best electric toothbrush for kids

This feature makes it possible to use normal gestures to control new applications for smartwatches and other objects connected through the internet of things.
Scientists have developed a new technology that enables smart watches to recognize gestures such as Pat and flick, and recognize objects held in the hands of users, making new interactions with wearable devices
Researchers at Carnegie Mellon University in the United States found that the software upgrade to redesign the existing accelerometer of the smart watch enables the device to detect and distinguish between various faucets, flick and scratch with hands and fingers.
Researchers say this feature makes it possible to use normal gestures to control new applications of smartwatches and other objects connected through the internet of things.
By monitoring the vibrations that occur when people are holding objects or using tools, smart watches are also able to identify objects and activities.
It can even be used to help tune the guitar, and the smartwatch shows the notes that are transmitted when the guitar is pulled out by hand and adjusted for each string.
"Just like you use your hand as a detection device.
Hands are what people use to interact with the world, "says Dr. Gierad Laput.
Institute of Computer Interaction.
The technology, called ViBand, was developed by Laput and Robert Xiao, who is also a PhD student at HCII, as well as their consultant Chris Harrison, an assistant professor at HCII.
Typically, the smartwatch accelerometer is used to detect when a person raises his arm so that the screen can be activated and sometimes count footsteps.
To do this, the accelerometer only needs to be measured 100 times per second.
However, when researchers raised the sampling frequency to 4 kHz (kHz), they found it to be like a vibrating microphone.
It combines with the body to detect creatures, not sounds transmitted through air
Sound signal.
"ViBand is not just a way to control a smartwatch.
It enables you to increase your arms.
"This is a powerful interface that you can always use," Harrison said . ". A ViBand-
An enabled watch can tell if someone is tapping the forearm, palm, or back of the hand.
It can detect the sliding, scratches and other movements of the fingers.
If a person is holding a variety of mechanical and electrical tools, such as an electric toothbrush, an electric drill or a hand saw, it can also feel it.
There are unique creatures for each body tap, device or activity
Sound signal.
To increase the frequency of the accelerometer sampling rate, the team developed a custom kernel
The core of the Smart Watch operating system.
This is the only modification that needs to be performed as a software update.
The team has developed several demo apps for ViBand, including using gestures around the watch to control apps on the watch.
Similar gestures can also be used to control remote devices, such as lights, TVs, or other devices connected through the internet of things.