Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for implementing a clearance service. In some aspects, a method includes obtaining first agreement data associated with an agreement between a first user and a second user. The method further includes verifying that the agreement data is valid based on a first input associated with the first user, a second input associated with the second user, or a combination thereof. The method also includes, after verification of the agreement, sending a request to create, at an institution server, a financial account associated with the agreement. The method includes storing, at a database, entry information at an entry associated with the agreement. The entry information indicates the first user, the second user, the agreement data, the financial account, or a combination thereof.

Abstract: An acoustic seal device is placed around the periphery of aircraft doors for reducing reducing wind noises transmitted into the aircraft cabin by the door gaps without adding additional weight to the aircraft. The acoustic seal includes a pre-shaped body made of a soundproofing material. The pre-shaped body is adapted to be secured to a door opening and has a shape that matches the shape of the door opening.