As others have mentioned, “Bump!” did it 15 years ago and it was little more than a novelty, despite its Google acquisition. iOS has also had the tapping-phones-to-connect feature baked in for years (NameDrop) and no one uses it. Curious how that OS-level functionality might conflict with the app-level bumping. That aside, w all respect to the poster, it strikes me that they took that comment and ran with it before doing any research. There’s definitely a better solution to the problem, and I hope they find it.