American researchers are developing a new technology that allows one to control one smartphone not through screenof touch, but with gestures around the phone, without the user touching it at all.
The sensors
Ενώ ορισμένα smartphones έχουν ήδη αρχίσει να ενσωματώνουν αισθητήρες που αντιλαμβάνονται τις κινήσεις του χρήστη μέσω της κάμερας της συσκευής, η δυνατότητα αυτή έχει το μειονέκτημα ότι καταναλώνει πολλή ενέργεια της μπαταρίας και επιπλέον η κάμερα πρέπει να έχει πάντα ξεκάθαρη picture of the user's hands.
Instead, the new technology is based on new type of wireless sensors that consume little energy and allow users to "train" their phone to recognize and respond to specific obscure gestures that make it close to it.
The system
The technology, developed by the Associate Professors Matti Reynolds and Suetak Patel of the Department of Electrical and Computer Engineering at the University of Washington, uses wireless transmission signalto recognize gestures, which means that the phone does not need to "see" the user's hands with the help of the camera. Even if the device is in a pocket or bag, it "catches" the gestures of its owner.
"Today's 'smart' mobile phones have many sensors, from cameras to accelerometers and gyroscopes, that can detect the movement of the phone itself. We have developed a new type of sensor that uses the reflection of the wireless transmission of the phone itself in order to perceive close gestures, thus allowing users to interact with their phone even if they do not hold it, do not look at the screen or touch it., said Mattie Reynolds.
The signs
When someone is talking on the phone or using an application over the internet, the device transmits radio signals, thus communicating with the antennas of the mobile network. When the user moves his hand around the phone, his body reflects back some of these radio signals back to the device.
The new sensor uses a series of built-in tiny antennas, which "catch" these changes in the reflected signal and thus detect which gestures they correspond to. The latter are then "translated" into specific commands to the phone (e.g. mute or change song). Because wireless radio signals easily penetrate fabric or other material, the system works even if the device is embedded somewhere.
"In that way", said Sweattak Patel, "All the space around the phone is transformed into an interactive space with it, beyond the interface of a standard touchscreen". So far, experiments with ten volunteers, which made 14 different gestures, showed that the device can recognize them with an average accuracy of 87%, which can be improved further in the future.
Innovative technology called SideSwipe, which can easily be integrated into existing smartphones, will be officially launched in early October at a computer conference in Hawaii. Researchers have already acquired the relevant commercial patent for their discovery.
Source: tovima.gr
