很多人看见指纹两个字，认为是有特定的设备仪器来采集，类似人的指纹。

设备指纹里的指纹换成ID(唯一标识)更合适。

强ID-手机出厂/使用自带的唯一标识

设备指纹-弱特征生成唯一标识

设备指纹生成

在git上搜索device fingerprint 能找到不少开源项目，比如clientjs中设备指纹代码：

getFingerprint: function() {var bar = '|';var userAgent = browserData.ua;var screenPrint = this.getScreenPrint();var pluginList = this.getPlugins();var fontList = this.getFonts();var localStorage = this.isLocalStorage();var sessionStorage = this.isSessionStorage();var timeZone = this.getTimeZone();var language = this.getLanguage();var systemLanguage = this.getSystemLanguage();var cookies = this.isCookie();var canvasPrint = this.getCanvasPrint();var key = userAgent + bar + screenPrint + bar + pluginList + bar + fontList + bar + localStorage + bar + sessionStorage + bar + timeZone + bar + language + bar + systemLanguage + bar + cookies + bar + canvasPrint;var seed = 256;return murmurhash3_32_gc(key, seed);}

设备指纹匹配

hash匹配都归类到相等匹配

设备指纹要点

如何获取字段(特征)如何生成Hash如何筛选字段如何评估效果

完整内容参考大数据风控实践课程