* disruptive pranks like false fire alarms have caused many schools to implement detection mechanisms such as surveillance cameras and tamper dyes.<ref>http://www.ahs.albany.k12.ny.us/AHS/misc/Hall_Sweeps_October_2008.pdf</ref> | * disruptive pranks like false fire alarms have caused many schools to implement detection mechanisms such as surveillance cameras and tamper dyes.<ref>http://www.ahs.albany.k12.ny.us/AHS/misc/Hall_Sweeps_October_2008.pdf</ref> |