fingerpring tracking

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2 years 6 months ago #120045 by Questler
Questler created the topic: fingerpring tracking
Instead of useing Cookies to prevent multiple participation it would be great that the javascript based fingerpring tracking would be used.

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2 years 6 months ago #120396 by jelo
jelo replied the topic: fingerpring tracking
You mean something like this?
www.darkwavetech.com/device_fingerprint.html

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2 years 5 months ago #121460 by Questler
Questler replied the topic: fingerpring tracking
Yes, that kind of device fingerprint tracking would work as well, even better.
But I had a fingerprint tracking in mind which based on javascript. It reads all your browser settings (addons etc.) and these settings makes you unique. I think thats the common method.

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2 years 5 months ago #121477 by Mazi
Mazi replied the topic: fingerpring tracking
Sounds interesting.

Please file a feature request at our Bugtracker.


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2 years 5 months ago #121481 by Ben_V
Ben_V replied the topic: fingerpring tracking

Questler wrote: But I had a fingerprint tracking in mind which based on javascript. It reads all your browser settings (addons etc.) and these settings makes you uniqu

Is your solution still working if the respondant use a user-agent switcher?
Related online tool: How unique is your browser ?

Benoît

EM Variables => bit.ly/1TKQyNu | EM Roadmap => bit.ly/1UTrOB4
Last Releases => 2.6x.x goo.gl/ztWfIV | 2.06/2.6.x => bit.ly/1Qv44A1
Demo Surveys => goo.gl/HuR6Xe (already included in /docs/demosurveys)

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2 years 5 months ago #121483 by jelo
jelo replied the topic: fingerpring tracking

Ben_V wrote: Is your solution still working if the respondant use a user-agent switcher?

Step one is to choose a selection of browser info items. Step two is to decide how many items have to be similar to be rated as the identical browser.

When choosing only a few items to identify a browser, a common approach is:
en.wikipedia.org/wiki/Canvas_fingerprinting

webcookies.org/cookies/www.limesurvey.org/2154989/
The following user(s) said Thank You: Ben_V

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2 years 5 months ago #121490 by Ben_V
Ben_V replied the topic: fingerpring tracking
Thank you Jelo for those explanations and links...
For me It's clear that it's dangerous to give too much importance to user-agent strings; Same problem as cookies: advanced web users are able to change their settings. Waiting for a better system, the good news is that the most part of users... never clear cookies.
The bad news is that they can use several browsers or devices. Hard to handle without tokens.

Benoît

EM Variables => bit.ly/1TKQyNu | EM Roadmap => bit.ly/1UTrOB4
Last Releases => 2.6x.x goo.gl/ztWfIV | 2.06/2.6.x => bit.ly/1Qv44A1
Demo Surveys => goo.gl/HuR6Xe (already included in /docs/demosurveys)

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2 years 5 months ago #121498 by jelo
jelo replied the topic: fingerpring tracking

Ben_V wrote: The bad news is that they can use several browsers or devices. Hard to handle without tokens.

You're right. As long as surveys are long and boring as they are mostly I am not afraid to see many respondents motivated enough to fill out a survey more than once ;-)

With normal cookies a browser is able to offer the user a opt out functionality. The fingerprinting technologies are not compatible with the cookies laws in EU. Not the best way to motivate people to answer a survey. I wouldn't use these fingerprint technologies.

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2 years 5 months ago #121502 by Ben_V
Ben_V replied the topic: fingerpring tracking

Jelo wrote: The fingerprinting technologies are not compatible with the cookies laws in EU

+1

Benoît

EM Variables => bit.ly/1TKQyNu | EM Roadmap => bit.ly/1UTrOB4
Last Releases => 2.6x.x goo.gl/ztWfIV | 2.06/2.6.x => bit.ly/1Qv44A1
Demo Surveys => goo.gl/HuR6Xe (already included in /docs/demosurveys)

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2 years 5 months ago - 2 years 5 months ago #121574 by Questler
Questler replied the topic: fingerpring tracking

jelo wrote:

Ben_V wrote:

With normal cookies a browser is able to offer the user a opt out functionality. The fingerprinting technologies are not compatible with the cookies laws in EU.


Do you have a link for this? Because the big affiliate companies in Germany are using fingerpring-tracking - link sorry it's in German -
Last Edit: 2 years 5 months ago by Questler.

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2 years 5 months ago #121580 by jelo
jelo replied the topic: fingerpring tracking
www.cookielaw.org/blog/2014/11/28/device...quires-user-consent/
www.out-law.com/en/articles/2014/novembe...ys-privacy-watchdog/

Till the directive is adopted by local laws it won't change much. Nobody will stop using the other technologies.
The normal cookie might need no additional consent via website because every browser now has a cookie cleaner on board.
So every user has a tool to clean and block cookies.
That isn't the case for other fingerprinting techniques. And the cookie directive is about identifying technologies and user consent.

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