Notification of Availability of Radar-Based Input for Electronic Devices

An electronic device comprising:

• a radar system, implemented at least partially in hardware, configured to:
• provide a radar field;
• sense reflections from a user in the radar field;
• analyze the reflections from the user in the radar field;
• provide, based on the analysis of the reflections, radar data;
• and
• determine, prior to receiving radar-gesture input and based on the radar data, whether the user is within a threshold distance of the electronic device;
• one or more computer processors;
• and
• one or more non-transitory computer-readable media having instructions stored thereon that, responsive to execution by the one or more computer processors, implement a radar-based input-mode availability manager configured to:
• determine whether an application that has a capability to receive radar gesture input is operating on the electronic device;
• and
• prior to receiving radar-gesture input and responsive to a determination that the application that has the capability to receive radar gesture input is operating on the electronic device and a determination that the user is within the threshold distance of the electronic device, cause the electronic device to present an input-mode notification, the input-mode notification associated with the capability to receive the radar gesture input.