I want to get user’s info like their email or number when he/she visits my website without making them signup or anything like that
I was doing R&D on the web and found nothing, Any leads would be helpful, I have searched for libraries/packages in python as well as npm but they would get me their IP Addresses, OS information etc. which I don’t need it at all!, I just want to know that how can I get user’s email or number or anything to get in touch with him/her, I’ve also looked for the paid softwares which offers these information but I want something legit.