随着社会经济的迅速发展,交通与通讯事业日益发达,区域之间人员流动越来越频繁,这些因素导致流窜作案、外来人口作案问题日益突出,同时由于法制建设的逐渐健全以及人们法律意识的不断增强,对每一个办案人员也提出了更高的要求,因此完全依靠传统的走访调查、摸底排查、侦查审讯 With the rapid socio-economic development, the increasingly prosperous transportation and communications industry and the increasingly frequent movement of personnel between regions have led to the infiltration and committing crimes. The problems of crimes committed by migrants have become increasingly prominent. At the same time, due to the gradual improvement of the legal system and people’s legal awareness Constantly increasing and putting higher requirements on every investigator. Therefore, he completely relied on the traditional investigation of visits, thoroughly investigating and investigating interrogations