ZyXEL Communications introduced a portable device the size of a stick of gum that combines a Wi-Fi hotspot finder with an access point. 
The ZyXEL AG-225H locates all the 802.11a and 802.11b/g access points in range and provides detailed information like SSID, encryption and security, operational channel, radio band, and signal strength on its LCD display. It also functions as a USB 2.0 client adapter and soft access point that allows users to instantly share wireless access with others. The soft access point feature could be used in conference rooms, meeting rooms and hotels where there is one wired network connection but multiple users. The device is powered by a LiON battery, allowing users to scan the environment for hotspots without turning on their computer.
ZyXEL said its device detects all 802.11a and 802.11b/g access points, including 802.11-compatible MIMO and Pre-N networks on both 5GHz and 2.4GHz bands. It uses the ZyDAS smart chipset for USB Wireless Client Adaptors. ZyDAS is a subsidiary of ZyXEL Corporation.
List price for the ZyAIR AG-225H is $99.
http://www.us.zyxel.com
