(Image: Spark IO)
In The Hobbit, Bilbo Baggins owns a sword named Sting. This magic sword glows in the presence of Orcs or goblins. Pictured above is a modern version: the WarSting. It glows when it detects unsecured WiFi networks.
(Image: Warner Bros.)
Spark IO built it into the body of a toy model of Sting. It's an educational tool designed to encourage people to encrypt their WiFi networks. Krista Peryer of Make writes:
And when you slash WarSting through the air near a unsecured Wi-Fi network, WarSting jumps on that network and publishes a message: “{YOUR WI-FI NETWORK} has been vanquished!”
-via Technabob