FingerIO: Using Active Sonar for Fine-Grained Finger Tracking • Hacker News Board

Re: FingerIO: Using Active Sonar for Fine-Grained Finger Tracking

#41

Post by MasterScrat » Fri, Mar 18, 2016, 1:25 PM UTC

noir-york wrote: post #31

jstapels wrote: post #24

I wonder how accurate it really is. The demo video didn't match up with the movements at all and the on-screen drawings looked like prerecorded video that they were trying to sync to. It's a neat idea, but without a dedicated component or an extremely high-speed RTOS, you're not going to come close to the level accuracy that's really needed to do the math and still allow interaction. I don't mean to rain on the parad…

If the tech is great then wonderful, but I still remember LeapMotion...

LeapMotion is not precise?

Re: FingerIO: Using Active Sonar for Fine-Grained Finger Tracking

#42

Post by lovelearning » Fri, Mar 18, 2016, 1:30 PM UTC

DuckyC wrote: post #10

debarshri wrote: post #9

How about security? How does it protect other uses from controlling your device?

How does your phone protect other people from pressing your volume buttons, or using your touchscreen? Security is pretty irrelevant for a HID.

According to their paper (which is written well IMO), their prototype uses a double swipe gesture to trigger or stop the detection. I suppose the idea could be extended to use something like a lock/unlock pattern, similar to the swipe patterns on Android lock screens.

Re: FingerIO: Using Active Sonar for Fine-Grained Finger Tracking

#43

Post by monatron » Fri, Mar 18, 2016, 1:30 PM UTC

k_bx wrote: post #38

We need to immediately improve on PIN-code protection upon cash-withdrawal in ATMs. The problem has been there for a while, but man, it gets easier and easier.

Sorry, I'm not sure how this is relevant or if this sentence even makes sense. Can you explain?

Re: FingerIO: Using Active Sonar for Fine-Grained Finger Tracking

#44

Post by andrew3726 » Fri, Mar 18, 2016, 1:38 PM UTC

monatron wrote: post #43

k_bx wrote: post #38

We need to immediately improve on PIN-code protection upon cash-withdrawal in ATMs. The problem has been there for a while, but man, it gets easier and easier.

Sorry, I'm not sure how this is relevant or if this sentence even makes sense. Can you explain?

I guess he means that you can place a smartphone near an ATM and catch the PIN-code with this technology somehow.

Re: FingerIO: Using Active Sonar for Fine-Grained Finger Tracking

#45

Post by [deleted] » Fri, Mar 18, 2016, 1:39 PM UTC

MawNicker wrote: post #34

zymhan wrote: post #25

Earlier quoted context omitted.

> implicitly ask them I think you mean "explicitly"

No he means implicitly. By not providing everything the academic implicitly requests a conversation before providing everything. The request is never stated but is implied by the assumption that there is no other way to acquire everything.

[deleted]

Re: FingerIO: Using Active Sonar for Fine-Grained Finger Tracking

#46

Post by mxuribe » Fri, Mar 18, 2016, 1:40 PM UTC

xtf wrote: post #20

Cats will love it. Thats why the first ultrasound remote never became standard

Aww, this is just going to wreak havoc for whales and dolphins once divers start using these! ;-)

https://en.wikipedia.org/wiki/Marine_mammals_and_sonar

Re: FingerIO: Using Active Sonar for Fine-Grained Finger Tracking

#47

Post by hardwaresofton » Fri, Mar 18, 2016, 1:41 PM UTC

k_bx wrote: post #38

We need to immediately improve on PIN-code protection upon cash-withdrawal in ATMs. The problem has been there for a while, but man, it gets easier and easier.

That's a great observation -- while it's not like ATMs were super secure to start with, now anyone who can mimic this sonar tech can put any device that just looks like it's supposed to be at the ATM near the pad, and pick up people's PINs

Re: FingerIO: Using Active Sonar for Fine-Grained Finger Tracking

#48

Post by cafeoh » Fri, Mar 18, 2016, 1:41 PM UTC

monatron wrote: post #43

k_bx wrote: post #38

We need to immediately improve on PIN-code protection upon cash-withdrawal in ATMs. The problem has been there for a while, but man, it gets easier and easier.

Sorry, I'm not sure how this is relevant or if this sentence even makes sense. Can you explain?

I suppose he means that a small microphone/speaker setup near an ATM machine's keypad could allow you to track the position of the finger and get the corresponding keypresses without any intrusive modification to the ATM itself.

Of course that would only be valid if you proceed to then steal the person's card right afterward, so all in all, not that useful.

Re: FingerIO: Using Active Sonar for Fine-Grained Finger Tracking

#49

Post by swiley » Fri, Mar 18, 2016, 1:43 PM UTC

monatron wrote: post #43

k_bx wrote: post #38

We need to immediately improve on PIN-code protection upon cash-withdrawal in ATMs. The problem has been there for a while, but man, it gets easier and easier.

Sorry, I'm not sure how this is relevant or if this sentence even makes sense. Can you explain?

It would be easy to build a device that did something similar to this and captured pin codes on ATM machines.

Re: FingerIO: Using Active Sonar for Fine-Grained Finger Tracking

#50

Post by [deleted] » Fri, Mar 18, 2016, 1:43 PM UTC

monatron wrote: post #43

k_bx wrote: post #38

We need to immediately improve on PIN-code protection upon cash-withdrawal in ATMs. The problem has been there for a while, but man, it gets easier and easier.

Sorry, I'm not sure how this is relevant or if this sentence even makes sense. Can you explain?

[deleted]