Abstract: A delivery monitoring system comprises a portable camera positioned on a delivery person; a camera activation application executed by a mobile electronic device to control a video-generating operation of the portable camera; and a special-purpose processor that outputs a data instruction to an electronic locking device to unlock an entrance to a location for delivering an item by the delivery person only when the portable camera is recording video.

Abstract: A delivery monitoring system comprises a portable camera positioned on a delivery person; a camera activation application executed by a mobile electronic device to control a video-generating operation of the portable camera; and a special-purpose processor that outputs a data instruction to an electronic locking device to unlock an entrance to a location for delivering an item by the delivery person only when the portable camera is recording video.

Abstract: A delivery monitoring system comprises a portable camera positioned on a delivery person; a camera activation application executed by a mobile electronic device to control a video-generating operation of the portable camera; and a special-purpose processor that outputs a data instruction to an electronic locking device to unlock an entrance to a location for delivering an item by the delivery person only when the portable camera is recording video.

Abstract: A delivery monitoring system comprises a portable camera positioned on a delivery person; a camera activation application executed by a mobile electronic device to control a video-generating operation of the portable camera; and a special-purpose processor that outputs a data instruction to an electronic locking device to unlock an entrance to a location for delivering an item by the delivery person only when the portable camera is recording video.

Abstract: One variation of a serving unit includes: a base; a wall extending from the base, including a frustoconical section, and defining a central axis; a rim extending from an upper edge of the wall; a seal extending across the rim and transiently enclosing a cavity defined by the wall and the base; a beater arranged within the cavity, configured to rotate about the central axis, including blades configured to extend along the base and up a portion of the wall, and including a drive coupling coaxial with the central axis; and a dry powdered food product arranged within the cavity and including a first quantity of flavoring, a second quantity of sweetener, and a third quantity of thickener.

Abstract: One variation of a method for preparing a frozen food product includes: following insertion of a vessel into a receiver: activating a cooling element thermally coupled to the receiver; transitioning a rotary motor from rest to a first target angular speed; and setting a first timer of a first duration; in response to expiration of the first timer and detection of contents of the vessel approximating a first target viscosity: reducing an angular speed of the rotary motor; and setting a second timer of a second duration; in response to expiration of the second timer and detection of the contents of the vessel approximating a second target viscosity: reducing the angular speed of the rotary motor; and setting a third timer of a third duration; in response to expiration of the third timer: reducing the angular speed of the rotary motor; and indicating completion of a frozen food product.

Abstract: In one embodiment, a graphical user interface is provided, where the graphical user interface includes a plurality of rows, each of the plurality of rows corresponding to a different one of a plurality of information sources. Each of the plurality of rows may include a plurality of icons, each of the plurality of icons representing a different one of a plurality of content items available from the corresponding one of the plurality of information sources. Input may be received, where the input indicates at least one of a vertical navigation with respect to the plurality of rows or horizontal navigation with respect to the plurality of icons within one of the plurality of rows. The graphical user interface may be traversed or modified according to the input.