Improved technological solutions are introduced for providing a secure and effective and enhanced clustering/grouping solution that is useful, for example, in an online dating forum as well as any number of other industries. The ability to attend live events in person or remotely is coupled with presence location and automatic verification of user devices and identities. This allows secured communication between participants without having to disclose actual contact information of the participants or their device addresses. An improved algorithm that groups members/items effectively based on a variety of matching criteria, with lowered possibilities of errors and more efficient use of processing power, is now introduced.