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That locking mechanism on your tablet computer or smartphone? It’s mostly a relic from the days of the keyboard. With the advent of touchscreens, the three-by-three grids and four-digit passcodes popular on today’s mobile devices are anachronistic. Yet they persist, despite “shoulder surfers” and the telltale oilsleft by swiping fingers. 眼下平板电脑或智能手机上的锁屏程序可谓键盘时代的遗物。随着触摸屏的出现，如今移动设备上常用的“九宫格”式和四位密码都过时了。然而，它们仍然在广泛使用，尽管老有人站在别人身后偷窥，而用户手指划过屏幕时留下的油迹也会泄露密码。 A new study from Rutgers University suggests that squiggling—yes, squiggling—on the screen of your tablet or smartphone may provide a better authentication mechanism than the standard pattern locks favored by Google’s GOOG 1.54% Android operating system and the Personal Identification Numbers (PINs) preferred by Apple’s AAPL -0.09% iOS. 美国罗格斯大学（Rutgers University）一项新研究表明，在平板电脑或智能手机上信手涂鸦可能是比谷歌（Google）安卓（ Android）操作系统所采用的标准模式锁屏以及苹果（Apple）所青睐的个人识别号码（Personal Identification Numbers, PINs）更好的身份验证机制。 “The current locking and authentication mechanisms available for mobile systems commercially do not work so well,” said Janne Lindqvist, an assistant professor of electrical and computer engineering at Rutgers University and an author of the study. “Instead of having old methods or cued methods, we let people just generate gestures without any kind of visual cue or other kind of instructions.” | 
