The MonoBrick Remote for Android let's you can control a LEGO Mindstorms brick using a bluetooth connection. You can control the direction and speed of a vehicle by placing your finger on a circle. Select from more that 20 different sensors and have your phone read sensor values aloud. Great when you are bussy driving your vehicle. Furthermore you can play sound files, start "on brick" programs and delete files. Last but not least the remote allows you to send vehicle input to a mailbox. This allows you to have a program running on the brick that can react to where the finger is placed on the circle.