Instead of taking that one vase, the thief could take two radios. And get more value. So the greedy thief, in some sense, gets the wrong answer. But maybe isn't so dumb.

这个贼可以带走两个收音机，这样总价值更大，因此这个贪婪的贼,在某种意义上没有得到正确的答案,但是可能它也不笨。

麻省理工公开课 - 计算机科学及编程导论课程节选

An onboard motion sensor can trigger an alert on your smartphone, letting you know that whatever you've tagged is on the move, so that bicycle thief won't get far before you're on the trail.

ENGADGET: BluTracker lets you locate your stuff within 2,500 feet, we go hands-on (video)

And remember: The thief doesn't need physical possession of your card to have enough data to do damage to your account.

FORBES: Beware ATM Fraud

To prosecutors, the 26-year-old Swartz was a thief whose aims to make information available didn't excuse the illegal acts he was charged with: breaking into a wiring closet at the Massachusetts Institute of Technology and tapping into its computer network to download millions of paid-access scholarly articles, which he planned to share publicly.

WSJ: MIT to release documents about activist Swartz