Travelers who use smartphones like the iPhone and the Google Nexus to check their e-mails or find their location on an online map may be slapped with unlimited charges while traveling in Europe and elsewhere. With millions of Americans now carrying Web-enabled phones, travelers are looking for money-saving tips when it comes to data roaming charges. Follow the easy device tips below to make sure you have no nasty phone bills after your vacation.

Anywhere in the world, public Wi-Fi could be a trap. Public Wi-Fi hotspots at hotels, airports, and coffee shops are less safe than they appear, especially ones that are "naked," or not protected with a hard-to-crack password.

Nintendo will launch its 3DS game console on March 27, with a display that creates the illusion of three-dimensional depth. In a convenient twist, the device does not require the user to wear goofy-looking glasses to enjoy the full 3D effect. Airlines might adopt similar displays for their seatback TVs, giving passengers the option to see 3D content on in-flight entertainment systems.