A method of and apparatus for automatically producing digital images of an object having a substantially uniform white level independent of the velocity of the object. In particular, methods and apparatus are provided for substantially reducing andor canceling third order nonlinearities in circuits, devices, and systems such as amplifiers and mixers. Data is then routed from the mobile device to a predetermined destination based on the hotline feature. A biasing member urges the first clip member and the second clip member toward each other wherein when the first clip member and the second clip member straddle the frame or rail member and the frame or rail member is positioned in the receiving portions, the biasing member urges the first and second clip members to engage the frame or rail member. Therefore, the separation of various fractions may be substantially quick and efficient. The hair clip is movable between an open and a closed position.