o th -b as e d W e arab le S e n s in g D e v ice fo r N u rs in g A ctiv ity R e co g n itio n R e n Oh m u ra F u to s h i N ay a H aru o N o m a K iy o s h i K o g u re A T R M e d ia In fo rm atio n S cie n ce L ab o rato rie s , K y o to , J ap an {re n ,n ay a,n o m a,ko g u re }@ atr.jpAbstract-This paper presents a wearable sensing device called " B -P ack " , which is designed to captu re nu rsing activities in real ho spitals. To pro vide u sability and fl ex ibility , B -P ack featu res wireless co nnectivity u sing B lu eto o th and a rechargeable battery with o n-bo ard charging circu itry . F u rtherm o re, to acq u ire sy nchro niz ed data o n distribu ted parts o f wearer's bo dy , B -P ack featu res a tim e sy nchro niz atio n pro to co l. Thro u gh ex perim ents and interviews, we co nfi rm ed that the data fro m each bo dy part was appro priately co llected fo r nu rsing activity reco gnitio n and that the design is su itable fo r a real nu rsing enviro nm ent.