Abstract: Detection and prevention of resource drain from unauthorized wireless device connections is provided. Responsive to receiving of a connection request from a connecting device, a pre-authentication message is sent to the connecting device, the pre-authentication message including a challenge value. A vehicle hash result is computed using a hash function taking the challenge value and the unique identifier of the vehicle as inputs. A device hash result is received from the connecting device. Responsive to a match of the vehicle hash result and the device hash result, additional hardware of the vehicle is activated to perform a secondary authentication of the connecting device. Responsive to a mismatch, authentication of the connecting device is rejected without activation of the additional hardware, thereby avoiding key-off load from the additional hardware in instances where pre-authentication of the connecting device fails.

Abstract: A whiteboard eraser includes a first side defining a grip surface, and a second side defining an eraser surface. The eraser surface comprises a reticulated scrubbing portion. The eraser surface may also include a textile wiping portion less abrasive than the reticulated scrubbing portion.

Abstract: A system includes an optical splitter that may receive an optical signal containing trading information from over an exchange network. The optical splitter may split the optical signal at a physical layer into a plurality of signals and transmit the plurality of signals toward a plurality of hosts at a customer end, which may execute transactions using the trading information.

Abstract: A system includes an optical splitter that may receive an optical signal containing trading information from over an exchange network. The optical splitter may split the optical signal at a physical layer into a plurality of signals and transmit the plurality of signals toward a plurality of hosts at a customer end, which may execute transactions using the trading information.

Abstract: Cyclically operable signature machine having a one-way drive to incrementally advance a signature infeeding conveyor synchronously to the action of an oscillating suction finger for withdrawing a signature from a stack in a hopper; in a cycle where a signature is not to be fed, the suction finger is latched and simultaneously the one-way drive is disabled to prevent the stack from being compacted.