Enhance user agent specific checks / Finger Printing

[erikyo]

Especially for apple-devices, because some check can fail on safari <12

It would be better to create a list of specific fingerprinting controls or even better trap controls such as window.navigator.standalone which is only available on apple (and therefore if the control is positive and the user agent is from another device the test fails)

[erikyo]

other ideas:

css fingerprinting
-> https://adtechmadness.wordpress.com/2019/03/05/bot-detection-101-2-entering-browser-fingerprinting/

bot challenge
https://bot.incolumitas.com/#botChallenge