Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for implementing mobile device-based bandwidth throttling. The transforming device receives the floating-point number, transforms the floating-point number to an integer part and a fractional part and outputs the integer part and the fractional part. Each OLED circuit element may include a fuse that is adapted to open an electrical connection in response to an electrical short in the pixel. The disclosed system further implements a technique for waiting for changes in a user’s availability status, and for performing actions on a user’s behalf in response to such changes in availability status.