“…In general,ithasbeenproventhat the design of an alarm system shouldbe customizedtothespecificconditionofuse,inordertoimprovethehuman-alarm interaction,analyzingthewaysalarmsareintegratedintotheworkingplacesina systemic perspective (Amaldi et al, 2007, Haas &Van Erp, 2014Van Erp,Toet, & Janssen,2015).Thegoalofthepresentworkwastoprovideanalarmsystemthatwas effectiveinthespecificworkingenvironmentofatoxicologylabofamajorhospitalin Torino,Italy,inthecontextofanIOT-basedsafetyproject (Antonini,Boella,Calafiore etal.,2016).Inthisenvironment,workersmightbeintoxicatedbyharmfulreagents leakedfromtheircontainers,ormightbeoverexposedtopotentiallytoxicsubstances. Existingsensorsdetectdatarelatedtotheleveloftoxicityoftheenvironment,andgo offoncethethresholdisovercame.Thus,inordertobetterknowthecontextwhereto situatethealarms,theauthorsstartedwithaparticipatoryactivityanalysistohighlight risksanddiscomfortexperiencedbytheoperatorsincurrentworkingpractices (Trizio, Occelli & Re, 2017).The analysis highlighted the specificities of the lab working conditions: (1) the workers might be doing critical activities that should not be interruptedifnotstrictlynecessary;(2)theyarepotentiallyexposedtocollectivebut alsotopersonalrisks,theirperformanceoftendivergesfromtheexpectedprocedures. Specifically,thenon-compliancewithorganizationalpoliciesandproceduresmight causepersonalrisksthatcanbeunder-estimatedevenbytheexperiencedoperators.…”