A bag for removably attaching to, and suspending from, the handle of an infant car seat. An accessor responsive to the voter validation number enables the voter to validate the vote by comparing a report of the vote with an election result tabulated by a vote tabulation center. The system comprises a physical system comprising a physical, at least partially random, configuration of components from which an initial bit-string is derived. A fixed screw axis surface formed by a migration of the finite screw axis is also determined. The error correction signal is received by a controller that controls the operation of a postioner that adjusts the position of the heliostat accordingly.