Navigating a user interface of a utility meter with touch-based interactions

1. A method of navigating a user interface of a utility meter, the method comprising:

while in a locked user input state:

receiving a first accelerometer measurement and remaining in the locked user input state;

transitioning from the locked user input state into an unlocked user input state based on detecting a sequence of unlocking techniques including detecting removal of a cover of the utility meter in combination with determining that there is an optical connection between an optical port of the utility meter and an external device;

while in the unlocked user input state:

displaying, on a display of a utility meter, a menu that comprises a plurality of objects;

receiving, from an accelerometer, a second acceleration measurement that represents three-dimensional movement;

comparing the second acceleration measurement to an expected user input, wherein the expected user input is associated with an interaction with a selected surface of the utility meter and is based on the displayed menu; and

when the second acceleration measurement corresponds to the expected user input, selecting an object from the plurality of objects.

2. The method of claim 1 , wherein transitioning to the unlocked user input state further comprises:

receiving, from the accelerometer, an additional acceleration measurement that represents an additional three-dimensional movement;

comparing the additional acceleration measurement to an expected unlock user input, wherein the expected unlock user input is associated with an additional interaction with the utility meter and is different from the expected user input; and

identifying a match between the additional acceleration measurement and the expected unlock user input.

3. The method of claim 1 , wherein transitioning to the unlocked user input state further comprises:

receiving, from a magnetic sensor and for a time threshold, a magnetic sensor signal indicating that a magnetic field has been applied to an exterior of the utility meter; and

determining when the time threshold has lapsed.

4. The method of claim 1 , further comprising, subsequent to displaying the menu:

starting a timer; and

when a value of the timer is greater than a threshold, configuring the utility meter in the locked user input state.

5. The method of claim 1 , further comprising:

receiving, from the accelerometer, an additional acceleration measurement that represents three-dimensional movement;

comparing the additional acceleration measurement to an additional expected user input, wherein the additional expected user input is associated with an additional interaction with an additional surface of the utility meter, wherein the additional surface differs from the selected surface; and

when the additional acceleration measurement corresponds to the additional expected user input, updating the display of the utility meter to an additional menu.

6. The method of claim 1 , wherein transitioning to the unlocked user input state further comprises:

receiving, on a radio of the utility meter, a signal from a mobile device.

7. A utility meter comprising:

an accelerometer configured to measure three-dimensional movement and attached to the utility meter;

a display;

a processor configured to perform operations comprising:

while in a locked user input state:

receiving a first accelerometer measurement and remaining in the locked user input state;

transitioning from the locked user input state into an unlocked user input state based on detecting a sequence of unlocking techniques including detecting removal of a cover of the utility meter in combination with determining that there is an optical connection between an optical port of the utility meter and an external device;

while in the unlocked user input state:

displaying, on the display, a menu that comprises an object;

receiving, from the accelerometer, a second acceleration measurement;

comparing the second acceleration measurement to an expected user input, wherein the expected user input is associated with an interaction with a selected surface of the utility meter and is based on the displayed menu; and

when the second acceleration measurement corresponds to the expected user input, updating the displayed menu to indicate a user selection of the object and updating the display by navigating the menu to indicate the selected object.

8. The utility meter of claim 7 , wherein transitioning to the unlocked user input state further comprises:

receiving, from the accelerometer, an additional acceleration measurement that represents an additional three-dimensional movement;

comparing the additional acceleration measurement to an expected unlock user input, wherein the expected unlock user input is associated with an additional interaction with the utility meter and is different from the expected user input; and

identifying a match between the additional acceleration measurement to the expected unlock user input.

9. The utility meter of claim 7 , further comprising a magnetic sensor, wherein transitioning to the unlocked user input state further comprises:

receiving, from the magnetic sensor and for a time threshold, a magnetic sensor signal indicating that a magnetic field has been applied to an exterior of the utility meter; and

determining when the time threshold has lapsed.

10. The utility meter of claim 7 , the operations further comprising, subsequent to displaying the menu:

starting a timer; and

when a value of the timer is greater than a threshold, configuring the utility meter in the locked user input state.

11. The utility meter of claim 7 , the operations further comprising:

receiving, from the accelerometer, an additional acceleration measurement that represents three-dimensional movement;

comparing the additional acceleration measurement to an additional expected user input, wherein the additional expected user input is associated with an additional interaction with an additional surface of the utility meter, wherein the additional surface differs from the selected surface; and

when the additional acceleration measurement corresponds to the additional expected user input, updating the display of the utility meter to an additional menu.

12. The utility meter of claim 7 , further comprising a cover removal switch configured to detect whether a cover of the utility meter is attached or removed, and wherein the processor is configured to:

receive, from the cover removal switch, an indication that the cover is removed.

13. A non-transitory computer-readable storage medium that stores computer-executable program instructions, wherein when executed by a processing device, the computer-executable program instructions cause the processing device to perform operations comprising:

while in a locked user input state:

receiving a first accelerometer measurement and remaining in the locked user input state;

transitioning from a locked user input state into an unlocked user input state based on detecting a sequence of unlock techniques, wherein the unlock techniques include (i) determining that there is an optical connection between an optical port of a utility meter and an external device and (ii) detecting actuation of a cover removal switch;

while in the unlocked user input state:

displaying, on a display of the utility meter, a menu that comprises a plurality of objects;

receiving, from an accelerometer, second acceleration measurement that represents three-dimensional movement;

comparing the second acceleration measurement to an expected user input, wherein the expected user input is associated with an interaction with a selected surface of the utility meter and is based on the displayed menu; and

when the second acceleration measurement corresponds to the expected user input, selecting an object from the plurality of objects on the displayed menu.

14. The non-transitory computer-readable storage medium of claim 13 , wherein the sequence of unlock techniques includes an expected user input and transitioning to the unlocked user input state comprises:

receiving, from the accelerometer, an additional acceleration measurement that represents an additional three-dimensional movement;

comparing the additional acceleration measurement to the expected unlock user input, wherein the expected unlock user input is associated with an additional interaction with the utility meter and is different from the expected user input; and

identifying a match between the additional acceleration measurement to the expected unlock user input.

15. The non-transitory computer-readable storage medium of claim 13 , wherein the sequence of unlock techniques further includes receiving, on a radio of the utility meter, a signal from a mobile device.

16. The non-transitory computer-readable storage medium of claim 13 , wherein transitioning to the unlocked user input state further comprises:

receiving, from a magnetic sensor for a time threshold, a magnetic sensor signal indicating that a magnetic field has been applied to an exterior of the utility meter; and

determining when the time threshold has lapsed.

17. The non-transitory computer-readable storage medium of claim 13 , the operations further comprising, subsequent to displaying the menu:

starting a timer; and

when a value of the timer is greater than a threshold, configuring the utility meter in the locked user input state.

18. The non-transitory computer-readable storage medium of claim 13 , the operations further comprising:

receiving, from the accelerometer, an additional acceleration measurement that represents three-dimensional movement;

comparing the additional acceleration measurement to an additional expected user input, wherein the additional expected user input is associated with an additional interaction with an additional surface of the utility meter, wherein the additional surface differs from the selected surface; and

when the additional acceleration measurement corresponds to the additional expected user input, updating the display of the utility meter to an additional menu.