Man of many voices
If you need to make a call but don't want to be identified -- say, for some insider trading, tipping off the press or telling a millionaire where to leave a bag of ransom or blackmail money -- the VC-Pro attaches to a phone and lets you increase or decrease the pitch of your voice.
A top-quality voice changer, good enough to even change what gender you sound like, will run as much as $600. A cheaper option, at 16 cents a minute, is the prepaid calling card SpoofCard. Placing a call with it will alter the sound of your voice and display a fake phone number on caller ID system -- perfect for either a shakedown or prank-calling pizza deliveries.
The ability to slap a tiny device to a car bumper and track the route of an escaping foe was once standard, but make-believe, spy movie fare. Now, thanks to uniquitous GPS technology, anyone can follow another's whereabouts.
The Micro Tracker bills itself as the "smallest real time tracker with 16-satellite global positioning." The unit is self-contained, with no external antenna, and sends detailed reports of where it's been via text messages or Google Earth. Battery life is one day.
Selling for between $179 and $289, the ITrail GPS Travel Logger -- magnetized for easy car tracking -- records location, speed, time, and displays the information on an interface powered by Google Maps and Google Earth.