“The only Wi-Fi detector that can tell you whether or not an in-range Wi-Fi access point is open or closed.

That means when you’re in a hotel lobby, airport, or other public place,you can keep your notebook computer in its case and use this little gadget to find out if there’s any usable Wi-Fi wafting through the area.

Tthe only device that tells you how many wireless access points are in range and the names and signal strengths of each. It requires no set-up and has just one button. Truly, a useful tool. $54.99 at Amazon”