How about a simple gadget that doubles up as a Wi-Fi detector and doesn’t even look like one. Here is a regular ball pen which detects Wi-Fi signals on the go. It detects and displays the signal strength with 4 LEDs indicating the signal strength which meets the requirement of IEEE802.11B/G.

I think it’s a useful gadget to have if it works the way it claims to work, a must have for people who are travel a lot.

Features:

• Plug and detect, and result is available in few seconds
• Convenient, as a pen, you don’t need to bring another one with you.
• 4 LEDs to indicate the signal strength (from 0 to 4)
• Operated by 2 cell batteries (included)

Specifications:

• Frequency: 2.400—2.483ghz
• Regulation: IEEE 802.11B / IEEE 802.11G
• Valid range: indoor 10–30M outdoors: 30–50M may vary according to surrounding environment and the power of batteries.
• Operating voltage: DC2.6-3.3v
• Power Source: 2* AG13
• Operating electric current : Maximum 35mA
• Sleeping electric current : Maximum 10uA
• Weight: 35g
• Dimension: diameter 14 x L138mm

The pen costs US $13.99 and ships worldwide for an additional $2.99. Click here to buy.