Patent ID: 8018796

Claim:
A bookmark comprising: a header; an electronic timer disposed within the header; a display disposed on a first surface of the header, the display configured to display an output of the electronic timer; a plurality of first control buttons disposed on the first surface of the header, the first control buttons configured to control an operation of the electronic timer; a plurality of second control buttons disposed on a second surface of the header that is substantially perpendicular to the first surface of the header, the second control buttons configured to control the operation of the electronic timer; a substrate extending from the header, a width of the substrate substantially equivalent to a width of the header, a thickness of the substrate less than a thickness of the header, a length of the substrate greater than a length of the header, and a first surface of the substrate substantially coplanar with a third surface of the header, the third surface of the header opposite the first surface of the header; a sensor disposed on the substrate, the sensor responsive to an external condition and automatically start and stop the operation of the electronic timer in response to the external condition; and the external condition is indicative of the bookmark being either inside a closed book or not inside a closed book.