In the near future, NFC contactless-enabled mobile phones are expected to become ubiquitous. They will act as payment cards, transportation tickets, loyalty cards, access control badges and offer many other contactless services. Several pilots are already in progress worldwide but these are typically in closed environments or limited in scope and the number of players involved. The GlobalPlatform Mobile Task Force decided to analyze potential implications of managing multiple secure elements in the same handset. This document details the findings of this investigation.