Extended Bluetooth naming for empowered presence and situated interaction with public displays Rui José 1 and Francisco Bernardo 2 1 Departamento de Sistemas de Informação Universidade do Minho. Campus de Azurem, 4800-058 Guimarães, Portugal rui@dsi.uminho.pt 2 Ubisign Tecnologias de Informação, Lda. Edifício Olympus II. Rua Cidade do Porto, 79 4709-003 Braga, Portugal info@ubisign.com Abstract The paradigm of proximity-based discovery and communication en- abled by Bluetooth technology can be very relevant in Ambient Intelligence as an enabler for situated interaction. In this work, we explore the use of Bluetooth nam- ing as a key driver for situated interaction around public displays. Our approach to the use of Bluetooth naming extends beyond self-exposure and introduces support for simple commands in the name that can trigger actions on the displays. Our specific objective is to evaluate the usability of this interaction technique and un- cover any guidelines for its usage. We have conducted a study combining a trial in a public bar and a set of usability interviews. The results obtained confirm Blue- tooth Extended Naming as an easily adoptable technique for situated interaction and suggest some recommendations to improve its effectiveness. Keywords: Situated interaction, Bluetooth, Presence, Public displays. 1 Introduction The paradigm of proximity-based discovery and communication enabled by Bluetooth technology is particularly well suited for situated interaction. In this work, we explore the use of Bluetooth naming as a key driver for situated interac- tion around public displays. Bluetooth devices have a user-defined name, created primarily for defining how Bluetooth devices present to each other, but which can be set and changed quickly. In the discovery process, these names become visible