Abstract: An electronic sideline marker for use in football comprises a first display configured to display an indication of a down and a second display configured to display one or more timers. The second display may be configured to display a play clock, a go-clock, and/or a throw-clock. A play clock may first be displayed, and the marker may then receive an indication (e.g., a button press) that the football has been snapped, at which point display of the play clock may be replaced with display of a go-clock. The marker may be configured to output indications when the play clock, go-clock, and/or throw-clock expire. The marker may be configured to electronically communicate with one or more other markers for use in the football game, or one or more other remote electronic devices such as sensors in flag football belts, flags, and/or footballs.

Abstract: Systems and methods described herein may provide an adjustable magnetic attachment force for flag football and for determining a location in flag football. In some embodiments, a system comprises a flag and a wearable item, wherein the flag and the wearable item are configured such that a magnetic attachment force exerted between a first connector and a second connector attaches the flag to the wearable item. In some embodiments, a set comprises one or more flags and one or more wearable items, wherein an adjustable magnetic attachment force attaching the flags and wearable items is adjusted by replacing one or more magnetic components. In some embodiments, a system comprising a flag and a wearable item is configured to detect that contact between a first connector and a second connector has been broken and to automatically indicate a location associated with the contact being broken.

Abstract: An electronic sideline marker for use in football comprises a first display configured to display an indication of a down and a second display configured to display one or more timers. The second display may be configured to display a play clock, a go-clock, and/or a throw-clock. A play clock may first be displayed, and the marker may then receive an indication (e.g., a button press) that the football has been snapped, at which point display of the play clock may be replaced with display of a go-clock. The marker may be configured to output indications when the play clock, go-clock, and/or throw-clock expire. The marker may be configured to electronically communicate with one or more other markers for use in the football game, or one or more other remote electronic devices such as sensors in flag football belts, flags, and/or footballs.

Abstract: Systems and methods described herein may provide an adjustable magnetic attachment force for flag football and for determining a location in flag football. In some embodiments, a system comprises a flag and a wearable item, wherein the flag and the wearable item are configured such that a magnetic attachment force exerted between a first connector and a second connector attaches the flag to the wearable item. In some embodiments, a set comprises one or more flags and one or more wearable items, wherein an adjustable magnetic attachment force attaching the flags and wearable items is adjusted by replacing one or more magnetic components. In some embodiments, a system comprising a flag and a wearable item is configured to detect that contact between a first connector and a second connector has been broken and to automatically indicate a location associated with the contact being broken.

Abstract: Systems and methods described herein may provide an adjustable magnetic attachment force for flag football and for determining a location in flag football. In some embodiments, a system comprises a flag and a wearable item, wherein the flag and the wearable item are configured such that a magnetic attachment force exerted between a first connector and a second connector attaches the flag to the wearable item. In some embodiments, a set comprises one or more flags and one or more wearable items, wherein an adjustable magnetic attachment force attaching the flags and wearable items is adjusted by replacing one or more magnetic components. In some embodiments, a system comprising a flag and a wearable item is configured to detect that contact between a first connector and a second connector has been broken and to automatically indicate a location associated with the contact being broken.

Abstract: Disclosed herein are devices, systems, and methods for officiating, spectating, and scorekeeping for flag football games using one or more wirelessly interconnected electronic devices. In some embodiments, a plurality of graphical user interfaces are provided on a mobile electronic device, the interfaces allowing game officials to create games that are visible to spectators, players, coaches, and statisticians/scorekeepers on a shared geographic map. After spectators, players, coaches, and/or statisticians/scorekeepers join a game, an official inputs information regarding timing and scorekeeping of the game to an interface of a mobile device carried by the official, and the inputted information is broadcasted from the official's device to mobile devices of spectators, players, and coaches, where it is displayed in real-time on graphical user interfaces of the receiving devices.

Abstract: An electronic sideline marker for use in football comprises a first display configured to display an indication of a down and a second display configured to display one or more timers. The second display may be configured to display a play clock, a go-clock, and/or a throw-clock. A play clock may first be displayed, and the marker may then receive an indication (e.g., a button press) that the football has been snapped, at which point display of the play clock may be replaced with display of a go-clock. The marker may be configured to output indications when the play clock, go-clock, and/or throw-clock expire. The marker may be configured to electronically communicate with one or more other markers for use in the football game, or one or more other remote electronic devices such as sensors in flag football belts, flags, and/or footballs.

Abstract: Systems and methods described herein may provide an adjustable magnetic attachment force for flag football and for determining a location in flag football. In some embodiments, a system comprises a flag and a wearable item, wherein the flag and the wearable item are configured such that a magnetic attachment force exerted between a first connector and a second connector attaches the flag to the wearable item. In some embodiments, a set comprises one or more flags and one or more wearable items, wherein an adjustable magnetic attachment force attaching the flags and wearable items is adjusted by replacing one or more magnetic components. In some embodiments, a system comprising a flag and a wearable item is configured to detect that contact between a first connector and a second connector has been broken and to automatically indicate a location associated with the contact being broken.