Swingers, lol. We dealt with the phone # problem in the early 00's.
The practical answer for this is two fold
1) Hook Up the Same Damn Night - stop collecting numbers and social media @'s - and go for the gusto every single time. If you get contact information, don't place any importance on it. It's an afterthought. If the chick can't accept the Gospel, keep it moving Black Jesus.
A) Add her to your social media and induce fomo.
B) Mass text all these chicks, "Hey I'ma be at such and such, come out, bring a friend, should be dope".
2) Increase your volume - If you're thinking about any given girl that you haven't got with (or even those that you have...), any given phone # - you don't have enough VOLUME.
So if you're doing the bar and clubs thing, you need to stop being a civilian about it. Maybe you're a known face at the spot, but you're not a known name - you need to be a name.
If you're doing the networking/happy hour/educated Black People thing - it's the same thing. So that means building some type of platform, or taking a leadership position. Male models could be in the church, the preacher gets all the attention.
If your game is primarily online - run ads on social media.
The mental energy we put into chicks that will forget us after hanging out for 2-3 hours and telling us her life story - these chicks are birds, even the smart ones.
Operate on that basis.
She's gonna get distracted, she's gonna not be into it 15 minutes after you leave, all types of things can happen.
And rather than invest in trying to keep one broads attention, invest in gathering all of the broads attention.