Rails Device "Fingerprinting"

Question

Is there any way or best practice around device fingerprinting for a rails app? In other words. Given that all cookies are blocked, is there any way, with a relatively good degree of certainty, who the person is before they log in?

My assumption: IPs are unreliable for obvious reasons.

score 2 · Answer 1 · answered Jan 14 '19 at 16:25

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Check out Fingerprintjs2. It is quite useful in trying to uniquely identifying a browser.

answered Jan 14 '19 at 16:25

Waseem

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score 2 · Answer 2 · answered Aug 29 '11 at 01:55

We've setup device fingerprinting in our rails app using ThreatMetrix.com They are sort of expensive, but used by a number of large sites on the web and have built some good technology around this.

I have seen some Jquery open source released for this crop up: https://github.com/carlo/jquery-browser-fingerprint But have not tried it.

score -1 · Answer 3 · edited Oct 04 '12 at 09:24

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Even if all cookies are blocked, javascript can pick up plenty of device attributes.

edited Oct 04 '12 at 09:24

Community

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answered Feb 25 '11 at 05:44

Device Fingerprint

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Link is broken. – Ain Tohvri Aug 16 '18 at 16:01

Rails Device "Fingerprinting"

3 Answers3