To help prevent property theft, register for Operation Identification. It is a free national program that gives you a unique identification number to mark on your property and stickers to display in your windows. Your number goes into the OPID database. If any participating agency recovers marked property, they simply check the database and find the owner, wherever they may live.
Unmarked property can be sold more easily at public auctions and through online exchange networks like Craigslist and eBay. Call your local law enforcement for more information.