Which technologies should I use for digital fingerprinting (Device Fingerprinting)? What development strategy should I use? [on hold]

I am an online survey provider, and due to the nature of my business, I get lots of fraud and duplicate users for my surveys which I can’t control by cookie restrictions.

I wish to implement Digital fingerprint tracking so that I can track the uniqueness of the respondent and can block unwanted respondents.

I want to know which technology should I use for this project (Which can handle 1000 – 1500 requests per second, or more). I also want to know what development strategy should I use for this project.

So far I’ve tried Fingerprint JS, Ever Cookie sort of examples, but based on my Traffic that is close to 1 million per day, this can’t work right now.

All kind of suggestions and advise are welcome and if this is not the right place to ask this kind of question, kindly let me know, where to ask it.