Physiological parameter sensing device

1. A method comprising:

receiving a physiological parameter via a sensor in a device case;

providing the physiological parameter to an application installed on a device contained in the device case;

determining a mood state based on the physiological parameter, wherein the mood state has an associated color;

selecting one or more songs based on the mood state;

changing, based on selected one or more songs and via the application installed on the device, a song sequence of a playlist comprising the selected one or more songs; and

causing a light source integrated into the device case to display the associated color in a pattern associated with the selected one or more songs.

2. The method of claim 1 , wherein the device case draws power from a power source.

3. The method of claim 2 , wherein the power source comprises one or more batteries.

4. The method of claim 3 , wherein the one or more batteries are configured for charging via a motion-powered charger, a pulse charger, a solar charger, a wind charger, or a Universal Serial Bus (USB) charger.

5. The method of claim 1 , wherein the device comprises a smartphone, a smart watch, a smart lighting device, a smart speaker, a tablet, or a laptop.

6. The method of claim 1 , wherein the physiological parameter comprises one or more of temperature, heart rate, or a blood pressure.

7. The method of claim 1 , wherein determining the mood state comprises:

determining a value of the physiological parameter;

comparing the value to a mood index; and

selecting the mood state from the mood index based on the value.

8. The method of claim 7 , wherein the mood state is happy, excited, sad, or angry.

9. The method of claim 7 , wherein the associated color is one of yellow, blue, green, red, orange, or purple.

10. An apparatus comprising:

a housing configured to receive a device;

a physiological sensor for sensing a physiological parameter of a user, the physiological sensor configured to interact directly with the user and, in response, initiate the sensing;

a light source for displaying a color;

a power source configured to supply power exclusively to the physiological sensor;

an input/output (I/O) device to couple to the device to exchange power and data; and

a processor configured to:

receive the physiological parameter from the physiological sensor,

provide the physiological parameter to an application installed on the device via the I/O device,

receive a command indicating a color,

select, based on the indicated color and via the application, one or more songs,

change, based on the selected one or more songs, a song sequence of a playlist comprising the selected one or more songs, and

cause the light source to display the color in a pattern associated with the selected one or more songs.

11. The apparatus of claim 10 , wherein the power source comprises one or more batteries.

12. The apparatus of claim 11 , wherein the one or more batteries are configured for charging via a motion-powered charger, a pulse charger, a solar charger, a wind charger, or a Universal Serial Bus (USB) charger.

13. The apparatus of claim 10 , wherein the device comprises a smartphone, a smart watch, a smart lighting device, a smart speaker, a tablet, or a laptop.

14. A system comprising:

a first device comprising:

a physiological sensor for sensing a physiological parameter of a user, the

physiological sensor configured to interact directly with the user and, in response, initiate the sensing;

a light source for displaying a color;

a first power source configured to supply power exclusively to the physiological sensor;

a first input/output (I/O) device to couple to a second device to exchange one or more of power and data;

a first processor configured to:

receive the physiological parameter via the physiological sensor, and

provide the physiological parameter to an application installed in the first device; and

the second device comprising:

a second power source;

a second I/O device to couple to the first device to exchange one or more of power and data;

a second processor configured to:

determine a mood state based on the physiological parameter, wherein the mood state has an associated color,

select one or more songs based on the mood state,

change, based on the selected one or more songs, a song sequence of a playlist comprising the selected one or more songs; and

provide a command to the first device to cause the light source of the first device to display the associated color in a pattern associated with the selected one or more songs.

15. The system of claim 14 , wherein the first power source comprises one or more batteries.

16. The system of claim 15 , wherein the one or more batteries are configured for charging via a motion-powered charger, a pulse charger, a solar charger, a wind charger, or a Universal Serial Bus (USB) charger.

17. The system of claim 14 , wherein the second device comprises a smartphone, a smart watch, a smart lighting device, a smart speaker, a tablet, or a laptop.

18. The system of claim 14 , wherein the playlist is stored on the first device or the second device.

19. The system of claim 14 , wherein the mood state is happy, excited, sad, or angry.

20. The system of claim 14 , wherein the associated color is one of yellow, blue, green, red, orange, or purple.