Very fast fingerprinting

Hi all I need to fingerprint visitors to a website. * Ideally it can recognise their device rather than browser. * It does not need to uniquely identify everyone; it just needs to be "good enough". For example, if 100 people visited the website it should be able to uniquely recognise 90+ of the visitors. * It must be able to run on or before DOMContentLoaded. * It needs to be very fast - under 200 ms, ideally under 100 ms. * It needs to be able to run in all browsers. * It needs to be written in JS. Almost all the bids on freelancer are automated, so to confirm you've actually read the project and know about fingerprinting, please tell me why fingerprintjs2 would not work for this. (The answer is obvious). Any questions, please ask. Thank you.