\input zb-basic \input zb-ioport \iteman{io-port 05775559} \itemau{Seth, Roily; Kapoor, Rishi; Al-Qaheri, Hameed; Sanyal, Sugata} \itemti{Piecemeal journey to 'HALCYON' world of pervasive computing: from past progress to future challenges.} \itemso{Informatica, Ljubl. 34, No. 2, 189-198 (2010).} \itemab Summary: Although `Halcyon' means serene environment which pervasive computing aims at, we have tried to present a different interpretation of this word. Through our approach, we look at it in context of achieving future `calm technology'. The paper gives a general overview of the state of pervasive computing today, proposes the `HALCYON Model' and outlines the `social' challenges faced by system designers. \itemrv{~} \itemcc{} \itemut{halcyon model; pervasive computing; nonchalant; connected; hidden; calm technology, privacy} \itemli{} \end