Systems and methods for authenticating a request submitted from a client device through a third party content provider to an electronic entity are described. An exemplary embodiment of the seat includes a seat back portion, a bottom portion, and a linkage coupling the bottom portion to the seat back portion such that the seat back portion is movable relative to the bottom portion. The inverting amplification stage comprises a transistor having a control terminal connected to the input of the inverting amplification stage, a first bias terminal operatively connected to the output of the inverting amplification stage, and a second bias terminal operatively connected to ground.