MacStumbler is korbens creation for Macintosh users to detect wireless networks from the mac laptops with wireless cards in mac os x. His program is free of cost, its abilities are perfect for WarDrivers as he adds GPS support to log AP's (access points).
MacStumbler stickers are made from vinyl sticker so they work perfectly on the iBooks. Identify yourself as a Mac user and a active stumbler with this sticker. Portion of the sale of this sticker goes to the developer of MacStumbler.