还在用密码和手势锁屏? 试试更安全的涂鸦吧_BEC初级作文

还在用密码和手势锁屏? 试试更安全的涂鸦吧

To measure each gesture’s level of security, the researchers imported a concept from Information Theory called “differential entropy.” This metric quantified the “information content,” or “surprisingness,” of a gesture. Generally, the most secure gestures were the most complex. Some of these looked like brambles, tumbleweeds or multi-faceted jewels.

为了准确衡量每种手势的安全性，研究人员引入了信息论中的“微分熵”概念。这个概念能量化手势的“信息内容”或者说“多样性”。一般来说，越复杂的手势越安全，它们有些看着像荆棘、风滚草等植物，还有些看起来像是有很多面的珠宝。

On average the most memorable gestures were shorter and simpler than those best for security. Some of the most memorable ones included simple angular shapes, like triangles, and signatures.

通常，与最安全的手势相比，那些最容易记住的手势一般比较简洁，其中包括简单的图案造型，例如三角形和签名等。

The least-secure gestures consisted of gentle, looping circles.

而最不安全的手势则要数单调循环的圆圈。

Another measure of security involved a “shoulder surfing” test. Six student volunteers independently watched videos of another student performing three representative gestures. These “attackers” were then asked to replicate each gesture.