Yeap the way to provide reliabilty is if several anonymous sources report the same problem. Also this system if the report is by smartphone it could provide GP

Yeap the way to provide reliabilty is if several anonymous sources report the same problem. Also this system if the report is by smartphone it could provide GPS to know the location of an incident. but complete anonimity is crucial. And also the peoplo must believe they are anonymous. some people that dare to report a crime do it from a public phone, they know what happens that do it from their cellphone.