There is no way to disable this iOS internal behavior programmatically; however, a workaround is to change the way you implement Nearby Interaction. You can implement it using iCloud, the Multipeer Connectivity framework, sockets, the Bonjour API, etc. By using Multipeer Connectivity, you can use Nearby Interaction without triggering NameDrop (sharing contact information if two phones are held close together) if you are not close enough.