Finding your way home should no longer be a problem with all the GPS devices on the market. A global positioning system connects satellites to pinpoint locations and directions. Modern units can come with iPod interfacing, 3-D layouts and voice commands.

Finding your way home should no longer be a problem with all the GPS devices on the market.

“It used to be a luxury item, but now it's almost a necessity,” said Gene Avras, owner of Precision Sound in Dedham, Mass.

A global positioning system connects satellites to pinpoint locations and directions. Modern units can come with iPod interfacing, 3-D layouts and voice commands.

“It's basically one entertainment location with everything in one spot,'' Avras said.

Precision Sound offers installation of GPS units in cars. Its most popular brands are Pioneer and JVC, which cost $800 to $2,000 including the installation work.

Portable GPS devices such as Garmin and Tom Tom are widely available. They can be found at various car-accessories dealers, department stores and electronics retailers.

GPS devices have become more mainstream thanks to iPod synching capability. GPS tracking can also be added to most cell phones.

“You're able to listen to music on them now,” said Phil Hunt, a salesperson at Detailz Car and Truck Accessories in Canton, Mass. “They're gearing them toward city pedestrians now.”

A portable GPS device can cost anywhere from $100 to $2,000, and the device can be updated annually online.

“I think everyone is always on the go these days, so you need it,” Hunt said. “People are traveling more for work. ... It's a lot safer (than trying to read directions).”

Lana Lagomarsini may be reached at llagomar@ledger.com.