FingerIO Active Sonar Smartphone Finger Tracking

FingerIO cleverly uses your smartphone's own speaker to emit an inaudible ultrasonic wave. That signal then bounces off your finger, and the “echoes” are recorded by your phone's microphones and are used to calculate the finger’s location in space. FingerIO was developed by University of Washington computer scientists and electrical engineers,


(FingerIO active sonar finger tracking video)

Using sound waves to track finger motion offers several advantages over cameras — which don’t work without line-of-sight or when the device is hidden by fabric or another obstructions — and other technologies like radar that require both custom sensor hardware and greater computing power, said senior author and UW assistant professor of computer science and engineering Shyam Gollakota.

But standard sonar echoes are weak and typically not accurate enough to track finger motion at high resolution. Errors of a few centimeters would make it impossible to differentiate between writing individual letters or subtle hand gestures.

So the UW researchers used “Orthogonal Frequency Division Multiplexing” (used in cellular telecommunications and WiFi), allowing for tracking phase changes in the echoes and correcting for any errors in the finger location.

Fans of beloved science fiction author Douglas Adams recall the gesture-based interface used in The Hitchhiker's Guide to the Galaxy from a generation earlier, and can't wait to use this idea on their smartphones:

A loud clatter of gunk music flooded through the Heart of Gold cabin as Zaphod searched the sub-etha radio wave bands for news of himself. The machine was rather difficult to operate. For years radios had been operated by means of pressing buttons and turning dials; then as the technology became more sophisticated the controls were made touch-sensitive--you merely had to brush the panels with your fingers; now all you had to do was wave your hand in the general direction of the components and hope. It saved a lot of muscular expenditure, of course, but meant that you had to sit infuriatingly still if you wanted to keep listening to the same program.

Zaphod waved a hand and the channel switched again.

Update 15-Jul-2016: Here's an earlier reference to the idea of a gesture interface from Samuel R. Delany's Babel-17 (1968):

Rydra shook her head. She passed her hand before the filing crystal. In the concaved screen at the base, words flashed. She stilled her fingers. "Navigator-Two. . . ." She turned her hand. "Navigator-One. . . ." She paused and ran her hand in a different direction.". . . male, male, male, female...

Rydra watched, her hand drifting through centimeters over the crystal's face. The names on the screen flashed back and forth.

Rydra's hand came down on the crystal face, and the name glowed on the screen.
(Read more about the filing crystal)

End update.

Via KurzweilAI.

Scroll down for more stories in the same category. (Story submitted 3/18/2016)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 0 )

Related News Stories - (" Engineering ")

Tiny LEDs Developed For Dust-Sized Computers
'They use sparkles to talk to each other...' - Neal Stephenson, 1995.

Seabreacher, H.G. Winter's 1939 Torpoon
'Ken lay full-length in the padded body compartment, his feet resting on the controlling bars of the directional planes, hands on the torpoon's engine levers.' - HG Winters, 1939.

Project Soli Radar Gesture Chip Now FCC Approved
'He waved his hand and the circuit switched abruptly.' - Philip K. Dick, 1955.

Implosion Fabrication Shrinks 3D Objects To Nanoscale
'Carter had watched miniaturization a hundred times...' - Isaac Asimov, 1965.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Miners! NASA Wants To License RASSOR Excavator
'The borers had been dismantled and packed away.'

Bee+ Robobee Now With Four Wings
'It was a tiny thing, scarcely more than an inch and a half in length...'

CNSILK Robotic Spider Builder
'We could certainly spin a web right through the Solar System, if we can think of a good use for one.'

Starshade Will Help Space Telescope To Search For Exoplanets
'When it found planetary systems in its field, automatically shifted upon them a higher powered telespectroscope ...'

Tiny LEDs Developed For Dust-Sized Computers
'They use sparkles to talk to each other...'

Is There Extraterrestrial Life Here In The Solar System
'How fast is it moving? ...one meter per minute.'

Can We Comprehend Deep Learning Systems?
'You’ve nothing remotely like it, so I can’t describe it to you.'

Skin Electronics Can Show Electrocardiogram
'... the young men in the streets who applied polyimde OLED body film to their bared shoulders.'

Chinese Fern Helps Remediate Arsenic Soil
'Bioengeering had put out a spec report on the long crawly things five months back.'

Skai Air Taxi Costs The Same As Uber
'The air-taxi found its way past and around other ground-cars...'

Neurodevices For Consumers? Neuroethicists (And Philip K Dick) Say 'Caveat Emptor'
'They tried to use it today and it wouldn't work. No colors and no ceph patterns, neither one...'

NASA 3D Printed Habitat Challenge Won By AI SpaceFactory
3D printing - on Mars!

The Future Of Elon Musk's Neuralink
'Cerebral Electromagnetic Emmission Amplification and Relay System — call it artificial telepathy, if you like.'

Researchers Make You Say Anything in Videos
'[It] caused his televised image... to mouth the vowels and consonants beautifully.'

Jeff Bezos Tries Waldoes (Robotic Hands)
'Waldo put his arms into the primary pair before him...'

Asimov and Musk - Boring Company Tunnel vs. Street Race
'There was almost no sound, just a steady velvety whirr as the taxi sped along.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.