行走中手机使用行为对步幅特征影响研究
Research on the Impact of Mobile Phone Usage Behavior on Stride Characteristics during Walking

步幅特征作为痕迹检验的重要内容，在公安工作中承担着不可替代的作用，而在通信技术发达的当今社会，智能手机的普及以及功能拓展使得人们对于手机的使用频率大大提高，边行走边使用手机的现象相当普遍。同样，犯罪嫌疑人也会在行走过程中使用手机，使得步幅特征发生一定程度上的改变，干扰步幅特征的判断。本文通过实验对使用手机行走时的步幅特征进行研究分析，发现在不同使用手机行走的情况下，步幅特征均有不同程度的改变，不同实验对象步幅特征的改变程度也不同，但总体上呈现步长减小、步宽减小、步角增大的趋势，研究结论可为步幅特征的刑事侦查和鉴定提供线索和参考。
Stride characteristics, as an important aspect of trace examination, play an irreplaceable role in public security work. In today’s society with advanced communication technology, the widespread adoption and functional expansion of smartphones have significantly increased people’s frequency of mobile phone use. The phenomenon of using a mobile phone while walking is quite common. Similarly, criminal suspects may also use their phones while walking, causing certain changes in stride characteristics and interfering with their assessment. This paper investigates and analyzes stride characteristics during mobile phone use while walking through experiments and finds that stride characteristics vary to different degrees under different conditions of mobile phone use while walking. The extent of changes in stride characteristics also differs among different experimental subjects but generally shows a trend of decreased step length, decreased step width, and increased step angle. The research conclusions can provide clues and references for criminal investigation and identification related to stride characteristics.