translation.en: What was interesting is, by videotaping on a bus, they were able to produce exactly what people on their smartphones were typing, and then they had a surprising result, which is that their software had not only done it for their target, but other people who accidentally happened to be in the picture, they were able to produce what those people had been typing, and that was kind of an accidental artifact of what their software was doing.
translation.zh: 有意思的是，利用公车上的录像 他们可以准确无误的得到他人在 手机上输入什么， 之后他们还发现了一个意外结果，就是 他们的软件不但会对他们的目标进行处理， 也可以对那些意外入镜的 人进行分析出 那些人都输入了什么，而这些 是这软件进行中所得到的意外收获。