Epstein worked with Neoteny Labs to create Littlebits Engineering kits that targeted pre-teen girls. Those circuits could be pinged via cell towers using the Littlebits cloudbit. Epstein used Columbus II-B cables from his Island and jump cell towers to ping and know the location of any of those pre-teen girls that owned littlebits.
https://justice.gov/epstein/files/DataSet%209/EFTA00151849.pdf
https://submarinecablemap.com/submarine-cable/columbus-ii-b