Geolocation services like Foursquare, in their infancy a year ago, now track the whereabouts of millions of users.

一年前，像Fours quare之类的地理定位服务还处于初始阶段，但现在已可以追踪数百万用户的去向。

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The NSO Group's software can read text messages and emails and track calls and contacts. It can even record sounds, collect passwords and trace the whereabouts of the phone user.

该公司销售的软件能够在无形中追踪目标的移动电话、读取短信和电子邮件、追踪通话和联系人信息，甚至还能记录声音、收集密码并追踪手机用户的下落。

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But with today's cheap--or free--handsets and low-cost calling plans, many parents are handing their kids phones in an effort to stay in touch and keep track of their whereabouts.

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The device won't let you make voice calls or surf the Web, but it does offer a host of safety features: It can map a bread-crumb trail of your coordinates so that people back home can track your whereabouts from any Web browser.

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But in this case the police were able to track the phones to an apartment complex nearby, thanks to the ability of the phones to signal their whereabouts.

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