A system and method for performing authentication are disclosed. The surgical guide includes a contact surface that conforms to a surface associated with the tissue and at least one guide for restricting movement of a surgical instrument in a first direction and for allowing the movement of the surgical instrument in a second direction along a cutting path across the surface of the tissue. The brush design allows the golfer to clean their clubs without needing to handle the cleaning brush. The invention also relates to a photolithography device comprising one such illuminator. The subsequent data comprises the server identifier and a further parameter. A user may invoke a text scrolling area in order to view extended text in place without obstructing the view of other screen items.