新应用程序：让你不会在地铁上睡过站

我们都经历过这种事：辛苦工作一天或者彻夜外出之后，在地铁上酣然入睡，等你一觉醒来后发现，终点站到了。这让人气急败坏，现在一种新的应用程序可以让这不再发生。

这款软件叫MetroNap（地铁小憩），开发者是纽约Bitly公司的员工Tobias Domhan。他的女朋友有一回在地铁上睡着了，醒来时已经到了城市另一端，所以Domhan才有了这样的创意。这款软件的使用方法是，输入出发站和到达站的站名后，利用智能手机上的加速度计来感应地铁的启动和停止，在到达目的地之前的几秒钟，该软件会发出声音提醒到站。

软件的创意听起来非常棒，但也有其局限性。比如，它无法分辨每次停车是因为真的到站了还是因为“前方站台正在检修”。现在该软件只对纽约的用户开放使用。

译者：高菲

百度新闻与新华网国际频道合作稿件，转载请注明出处。

This App Wakes You Up at Your Stop If You Fall Asleep on the Subway

We\'ve all done it. After a tough day at work or a long night of drinking, the gentle motion of the subway rocks you right to sleep, and the next thing you know, you wake up in the Bronx. It\'s a frustrating problem, but one app developer thinks he has the solution: a motion-based alarm clock that wakes you up at your stop.

It\'s called MetroNap. New York-based Tobias Domhan, a Bitly alum, got the idea for the app after his girlfriend fell asleep on train and ended up on the city\'s fringes. To use it, you start by putting in the name of your starting station and your destination. The app then uses your smartphone\'s accelerometer to detect when when the train is moving and when it\'s standing still. A few seconds before your reach your stop, the alarm will go off saving you from an unintended trip to Coney Island.

It\'s a great-sounding idea, but one that\'s not without its limitations. How, for instance, can the app tell if you\'re actually stopped at a station versus being stopped in a tunnel due to train traffic or the dreaded "on-going investigation" at the next station? MetroNap is also currently available for Android in Google Play and only available in New York City.