Abstract: Aspects of the present disclosure relate to use-based security challenge authentication. Usage frequency metrics for features of an electric device can be collected over time. A set of critical features can be determined based on the collected usage frequency metrics, where each critical feature has a usage frequency exceeding a usage frequency threshold. A determination can be made whether a condition is met for use-based authentication. In response to determining that the condition is met for use-based authentication, a use-based security challenge can be generated using a critical feature, the use-based security challenge based on use frequency of the critical feature. The generated use-based security challenge can be presented to the user. A response to the use-based security challenge can be received. A sufficiency of the response to the use-based security challenge can be determined. Access to the electronic device can be authorized based on a sufficiency of the response.

Abstract: A smart-home device may include a main power rail that provides power to components of the smart-home device; an integrator coupled to the main power rail that stores energy on an energy-storage device, where the energy stored on the energy-storage device is representative of an amount an amount of power provided to the smart-home device through the main power rail during an integration cycle of the integrator; and a counter that stores a number of integration cycles performed by the integrator during a time interval, where a total amount of power provided to the smart-home device through the main power rail during the time interval is represented by: (1) the number of integration cycles performed by the integrator during the time interval; and (2) the energy stored on the energy-storage device.

Abstract: A method for guiding installation of smart-home devices may include capturing, by a camera of a mobile computing device, a view of an installation location for a smart-home device; rendering, by the mobile computing device, a view of a virtual object that represents a real-world obstruction that will interfere with the operation or installation of the smart-home device; and displaying, by the mobile computing device, the view of a virtual object that represents real-world obstruction with the view of the installation location on the display of the mobile computing device.

Abstract: A smart-home device may include a temperature sensor, energy-consuming subsystems, and processors programmed to receive a temperature measurement from the temperature sensor for an ambient environment surrounding the temperature sensor; receive inputs from the energy-consuming subsystems that indicate power-consuming activities of the energy-consuming subsystems; providing the inputs from the energy-consuming subsystems to a model that is trained to calculate an effect of the power-consuming activity of the energy-consuming subsystems on the temperature measurement from the temperature sensor; and calculating an estimate of the temperature of the ambient environment by compensating the temperature measurement from the temperature sensor with using the effect of the power-consuming activity of the energy-consuming subsystems.

Abstract: A method for guiding installation of smart-home devices may include capturing, by a camera of a mobile computing device, a view of an installation location for a smart-home device; determining, by the mobile computing device, an instruction for installing the smart-home device at the location; and displaying, by a display of the mobile computing device, the view of the installation location for a smart-home device with the instruction for installing the smart-home device.

Abstract: Techniques for adjusting operation of an electronic device are described. In an example, while the electronic device is operating in a first operating mode according to a first parameter, a set of signals indicating an object in a room, and based on received reflected radar signals, are transmitted by a radar transceiver of the electronic device to one or more processors of the electronic device. By analyzing the set of signals to identify the object as a person, the one or more processors determine that the room is occupied. In accordance with determining that the room is occupied by the person, the electronic device is adjusted to operate in a second operating mode according to a second parameter suitable for sensing objects at a closer distance than the first parameter.

Abstract: The various implementations described herein include methods, devices, and systems for determining locations of an electronic device. In one aspect, a method is performed at a computing system having one or more processors and memory. The method includes obtaining device identification information for the electronic device; broadcasting a request based on the device identification information that the electronic device be enabled to transmit or reflect location information using a radar technique; receiving a signal from the electronic device, the signal indicating a location of the electronic device using a radar technique; and determining the location of the electronic device based on the received signal.

Abstract: The various implementations described herein include methods, devices, and systems for determining locations of an electronic device. In one aspect, a method is performed at a computing system having one or more processors and memory. The method includes obtaining device identification information for the electronic device; broadcasting a request based on the device identification information that the electronic device be enabled to transmit or reflect location information using a radar technique; receiving a signal from the electronic device, the signal indicating a location of the electronic device using a radar technique; and determining the location of the electronic device based on the received signal.

Abstract: A smart-home device may include a main power rail that provides power to components of the smart-home device; an integrator coupled to the main power rail that stores energy on an energy-storage device, where the energy stored on the energy-storage device is representative of an amount an amount of power provided to the smart-home device through the main power rail during an integration cycle of the integrator; and a counter that stores a number of integration cycles performed by the integrator during a time interval, where a total amount of power provided to the smart-home device through the main power rail during the time interval is represented by: (1) the number of integration cycles performed by the integrator during the time interval; and (2) the energy stored on the energy-storage device.

Abstract: A smart-home device may include a temperature sensor, energy-consuming subsystems, and processors programmed to receive a temperature measurement from the temperature sensor for an ambient environment surrounding the temperature sensor; receive inputs from the energy-consuming subsystems that indicate power-consuming activities of the energy-consuming subsystems; providing the inputs from the energy-consuming subsystems to a model that is trained to calculate an effect of the power-consuming activity of the energy-consuming subsystems on the temperature measurement from the temperature sensor; and calculating an estimate of the temperature of the ambient environment by compensating the temperature measurement from the temperature sensor with using the effect of the power-consuming activity of the energy-consuming subsystems.

Abstract: A method for guiding installation of smart-home devices may include capturing, by a camera of a mobile computing device, a view of an installation location for a smart-home device; determining, by the mobile computing device, an instruction for installing the smart-home device at the location; and displaying, by a display of the mobile computing device, the view of the installation location for a smart-home device with the instruction for installing the smart-home device.

Abstract: An electronic device is located in a room. The device has a casing, a first processor coupled to a radar transceiver, a second processor coupled to a motion sensor, and memory. Using the second processor, the device determines using signals from the motion sensor whether an object is in proximity. In accordance with a determination that the object is in proximity, the device wakes up the first processor. Using the first processor, the device enables operation of the radar transceiver. It determines using signals from the radar transceiver whether the object is in contact with the casing. In accordance with a determination that the object is in contact with the casing, the device identifies an input command based on at least one of: a location of the object, and a movement of the object, and adjusts operation based on the input command.

Abstract: A method for guiding installation of smart-home devices may include capturing, by a camera of a mobile computing device, a view of an installation location for a smart-home device; identifying a wire in the view of the installation location for the smart-home device; determining an instruction for connecting the wire to the smart-home device; and displaying the view of the installation location for a smart-home device with the instruction for connecting the wire to the smart-home device.

Abstract: An electronic device is located in a room. The device has a casing, a first processor coupled to a radar transceiver, a second processor coupled to a motion sensor, and memory. Using the second processor, the device determines using signals from the motion sensor whether an object is in proximity. In accordance with a determination that the object is in proximity, the device wakes up the first processor. Using the first processor, the device enables operation of the radar transceiver. It determines using signals from the radar transceiver whether the object is in contact with the casing. In accordance with a determination that the object is in contact with the casing, the device identifies an input command based on at least one of: a location of the object, and a movement of the object, and adjusts operation based on the input command.

Abstract: The various embodiments described herein include methods, devices, and systems for ultrasonic sensing on electronic devices. In one aspect, a method is performed at an electronic device having memory, one or more processors, a speaker, and a microphone. The method includes, while audibly communicating with a user via the speaker and microphone: (1) sending one or more ultrasound pulses via the speaker; (2) receiving, via the microphone, one or more signals corresponding to the one or more ultrasound pulses; (3) determining positioning of the user based on the one or more received signals; and (4) adjusting one or more parameters of the speaker and/or the microphone based on the determined positioning.

Abstract: A method for guiding installation of smart-home devices may include capturing, by a camera of a mobile computing device, a view of an installation location for a smart-home device; identifying a wire in the view of the installation location for the smart-home device; determining an instruction for connecting the wire to the smart-home device; and displaying the view of the installation location for a smart-home device with the instruction for connecting the wire to the smart-home device.

Abstract: An electronic device has memory, one or more processors, a speaker, and a microphone. The device sends a first set of ultrasound chirps at a first rate via the speaker. It receives, via the microphone, a first set of signals corresponding to the first set of ultrasound chirps and being reflected from a person. The device determines based on the first set of signals that the person is in proximity to the electronic device. In accordance with the determination that the person is in proximity to the electronic device, the device sends a second set of ultrasound chirps at a second rate, faster than the first rate. It receives, via the microphone, a second set of signals corresponding to the second set of ultrasound chirps, and identifies a gesture from the person based on the second set of signals.

Abstract: The various implementations described herein include methods, devices, and systems for determining locations of an electronic device. In one aspect, a method is performed at a computing system having one or more processors and memory. The method includes obtaining device identification information for the electronic device; broadcasting a request based on the device identification information that the electronic device be enabled to transmit or reflect location information using a radar technique; receiving a signal from the electronic device, the signal indicating a location of the electronic device using a radar technique; and determining the location of the electronic device based on the received signal.

Abstract: A method for optimizing the placement of smart-home devices may include receiving, by a mobile computing device, a location for a smart-home device, where the mobile computing device comprises a display and a camera; rendering a view of a virtual object that represents a field-of-view of the smart-home device, where the view of the virtual object is rendered based on a position corresponding to a position of the mobile computing device; and displaying, by the mobile computing device, the view of a virtual object that represents a field-of-view of the smart-home device on the display of the mobile computing device.

Abstract: The various implementations described herein include methods, devices, and systems for determining locations of a plurality of electronic devices within a home. In one aspect, a method is performed at a computing system having one or more processors and memory. The method includes: (1) obtaining device identification information for a plurality of electronic devices; (2) broadcasting, via a standard wireless communication protocol, a request based on the device identification information that a particular electronic device of the plurality of electronic devices be enabled to transmit or reflect location information using a radar technique; (3) receiving a signal from the particular electronic device, the signal indicating a location of the particular electronic device using a radar technique; and (4) determining the location of the particular electronic device based on the received signal.