Abstract: A directional air jet system includes a body frame. The body frame defines a cavity therein. A plurality of pedestals is affixed to the body frame and each has a pedestal surface. A plurality of magnets is each affixed to a different one of the pedestal surfaces and are couple the body frame to the air vent. A turret extends outwardly from the hole defined by the lateral surface and is configured to rotate about a first axis. A ball nozzle is pivotally fit into the turret and defines a bottom opening that is in fluid communication with the cavity through the turret. The ball nozzle is configured to rotate about a second axis that is transverse to the first axis so as to be configured to direct air from the air vent as an air jet in a user-selected direction.

Abstract: A directional air jet system includes a body frame. The body frame defines a cavity therein. A plurality of pedestals is affixed to the body frame and each has a pedestal surface. A plurality of magnets is each affixed to a different one of the pedestal surfaces and are couple the body frame to the air vent. A turret extends outwardly from the hole defined by the lateral surface and is configured to rotate about a first axis. A ball nozzle is pivotally fit into the turret and defines a bottom opening that is in fluid communication with the cavity through the turret. The ball nozzle is configured to rotate about a second axis that is transverse to the first axis so as to be configured to direct air from the air vent as an air jet in a user-selected direction.

Abstract: A recipient computer system may receive one or more electronic messages. The recipient computer system may send one, two, or more challenge messages to the sender of the electronic messages in determining whether to deliver the electronic message. The recipient computer system may accept or reject an electronic message based on the response, or lack of response, to the challenge messages. The recipient computer system may send two or more challenge messages at intervals. A sender computer system may record activity of the sender computer system for a recipient computer system to use in determining whether to deliver an electronic message. A sender computer system may provide a summary of that activity with an electronic message. A sender computer system may provide an authorization key for a recipient computer system to use in determining whether to deliver an electronic message. The authorization key may be generated by a third party.