27 May 2008 14:53 GMT / By Amy-Mae Elliott
Just press the button on this ordinary-looking pen and the LEDs begins to flash. After a few seconds, the flashing stops and the LEDs will display the 802.11b/g Wi-Fi signal strength of your current location. $19.90 available now.
We detail the best iPad 2 and iPad apps in the app store Which iPad app should you download?
All the features and details of the new Microsoft operating system explained What's new in Windows 8?
What comes next? We look at the possible features, leaks, images, specs and more
Nikon D800 pictures and hands-on Full frame camera in the flesh
Nikon D700 vs Nikon D800 New and improved?
Acer CloudMobile Ice Cream Sandwich smartphone set for MWC launch 4.3-inch award winner
