手机连入Wi-Fi可变追踪器 当心被手机出卖

    |     2016年3月14日   |   业界资讯   |     0 条评论   

中国科讯网消息:据英国《每日邮报》3月11日报道,研究人员发现可以通过连入Wi-Fi后的手机信号追踪行人的行踪,这一发现将有助于完善社会基础设施建设。

当手机连入Wi-Fi热点,手机持有者的行走路线和目的地就会像撒上了面包屑一样,留下一条“电子路线”。通过这种技术,不需要视频记录、发放传单,研究者就可以在地图上轻而易举地看出大学生和教职工们每天行走的线路,从而分析出学校附近哪家餐馆最受欢迎,以及受欢迎的原因。

  研究者收集了2000多名学生近10天在学校附近连接Wi-Fi留下的两百多万个路线点,整理数据后,对应到学校附近的21家餐厅。再结合学生课程表,餐厅销售记录等数据,研究者就可以分析出影响学生就餐选择的因素。

瑞士洛桑联邦理工学院(EPFL)交通运输实验室研究员Antonin Danalet表示,对于驾车或乘坐火车的人,我们都可以收集到出行记录数据,但步行者的出行数据一直很难收集。通过这种方式,我们可以了解到步行者的出行习惯,分析他们在音乐节、博物馆、医院等对道路基础设施的使用,既简便,成本又低。

通过Wi-Fi记录,Danalet在洛桑联邦理工学院对学生们进行了调查,并制作了一个学生活动路线选择模型。通过这一模型可以分析出学生产生厌烦、进度拖延与上课时间、主要活动、时段及活动形式之间的关系。Danalet还专门为一项活动制作了目的地模型—吃。除了电子路线,模型涉及的其他参数还包括餐厅事物的价格,种类,位置是否明显,与上家餐厅的距离,社会经济参数等等。

为了检验模型是否准确,Danalet亲自进行了调查。“我们将Wi-Fi记录,与一项调查学生们到校时间的调查记录进行了比对。”结果发现,调查中学生们早晨的到校时间要比Wi-Fi记录晚一个半小时。Danalet对这样的结果表示疑惑:“难道是学生们到校一个半小时之后才打开手机吗?还是他们不愿意配合调查?”

Danalet认为,这项技术可以应用于步行者较多的公共区域。他说:“这套调查方法可以应用与各种步行者较多的公共区域,尤其是火车站、医院、机场、博物馆等附近。这有助于我们改善和增加基础设施建设。比如,可以通过这种方式确定火车站售票机设立点,或者了解不同楼层便利店的售货情况。”

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