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Residential proxies are too prevalent for IP address limits to work effectively.


Is there some public research that how often, for example, people download malware that allows this?


You can use cookies to track usage history


I can delete cookies to obscure usage history


You can combine it with user PC fingerprinting


You can also just ask for a login…


You could also make the wannabe user buy a $500 retinal scanner and use biometric ID ...




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