Accelerometer
in sentence
13 examples of Accelerometer in a sentence
Every security expert wants to hack a smartphone, and we tend to look at the USB port, the GPS for tracking, the camera, the microphone, but no one up till this point had looked at the
accelerometer.
The
accelerometer
is the thing that determines the vertical orientation of the smartphone.
They put a smartphone next to a keyboard, and they had people type, and then their goal was to use the vibrations that were created by typing to measure the change in the
accelerometer
reading to determine what the person had been typing.
Now, when they tried this on an iPhone 3GS, this is a graph of the perturbations that were created by the typing, and you can see that it's very difficult to tell when somebody was typing or what they were typing, but the iPhone 4 greatly improved the accelerometer, and so the same measurement produced this graph.
Now that gave you a lot of information while someone was typing, and what they did then is used advanced artificial intelligence techniques called machine learning to have a training phase, and so they got most likely grad students to type in a whole lot of things, and to learn, to have the system use the machine learning tools that were available to learn what it is that the people were typing and to match that up with the measurements in the
accelerometer.
And so, together we're able to reproduce typing simply by measuring the
accelerometer.
Well, in the Android platform, for example, the developers have a manifest where every device on there, the microphone, etc., has to register if you're going to use it so that hackers can't take over it, but nobody controls the
accelerometer.
It has a force sensor, so we can tell how hard you're pushing; it has motion tracking, so we can tell exactly where you've moved it; and it has a vibration sensor, an accelerometer, inside, that detects the shaking back and forth of the tool that lets you know that's a piece of canvas and not a piece of silk or something else.
So what we do is add an
accelerometer
on to the dental explorer, and then we record what Dr. Maggio feels as she touches different extracted teeth.
And vibrato is mapped to the accelerometer, so you can get — (Music) All right.
We wanted everyone to walk at least 7,000 steps, and we measured their step count with the
accelerometer
on their cell phone.
It's like a wireless accelerometer, pedometer.
This little black dot there is a 3D
accelerometer.
Related words
Typing
Where
Tracking
There
Their
People
Microphone
Created
Whole
While
Wants
Wanted
Vibrations
Vibration
Vertical
Tried
Training
Touches
Tools
Together