Creative, strategic thinking, and informed decision-making remain distinctly human advantages. Avoid the identity-first limitation, getting a name or email before you even know their intent and in the process loosing them. 1st. You need to know what a visitor's intent is, 2nd. Are they a fit for what you have to offer, 3rd.You then seek their identity once you have engaged them. 

Now you have the highest potential visitor that is in need of what you offer. It's a win, win situation.