Activity monitoring

1. An apparatus configured to operate either in a first low power mode or a second high power mode, wherein:

when operating in the first low power mode, the apparatus is configured to:

generate motion data; and

broadcast the generated motion data in advertising packets of a wireless communication protocol, and

when operating in the second high power mode, the apparatus is configured to:

generate further motion data; and

transmit the further motion data to a remote device via a communication session established with the remote device.

2. The apparatus according to claim 1 , wherein the apparatus is further configured to:

generate the motion data at a first repetition frequency when operating in the first low power mode; and

generate the further motion data at a second repetition frequency when operating in the second high power mode,

wherein the second repetition frequency is higher than the first repetition frequency.

3. The apparatus according to claim 2 , wherein the apparatus is further configured to:

broadcast the motion data at the first repetition frequency when operating in the first low power mode; and

transmit the further motion data at the second repetition frequency when operating in the second high power mode.

4. The apparatus according to claim 1 , wherein the apparatus is further configured to:

receive a connection request from the remote device,

establish the communication session with the remote device according to the wireless communication protocol in response to receipt of the connection request.

5. The apparatus according to claim 1 , wherein the apparatus is further configured to:

receive, from the remote device via the established communication session, a command to change operation of the apparatus from the first low power mode to the second high power mode; and

in response to receipt of the command, discontinue the broadcast of the generated motion data in the advertising packets.

6. The apparatus according to claim 5 , wherein the apparatus is further configured to receive, from the remote device via the established communication session, a further command to revert operation of the apparatus from the second high power mode to the first low power mode.

7. The apparatus according to claim 1 , comprising an accelerometer configured to generate the motion data and the further motion data.

8. The apparatus according to claim 7 , wherein the motion data and further motion data comprise a plurality of multi-dimensional position data.

9. The apparatus according to claim 1 , comprising:

a gyroscope,

wherein, when operating in the second high power mode, the apparatus is configured to:

activate the gyroscope;

generate rotational data with the gyroscope; and

transmit the generated rotational data to the remote device via the established communication session with the remote device.

10. The apparatus according to claim 1 , comprising:

a pressure sensor,

wherein, when operating in the second high power mode, the apparatus is configured to:

activate the pressure sensor;

generate pressure data with the pressure sensor; and

transmit the generated pressure data to the remote device via the established communication session with the remote device.

11. The apparatus according to claim 1 , wherein:

the wireless communication protocol comprises a Bluetooth Low Energy (BLE) protocol, and

the advertising packets comprise BLE advertising packets.

12. The apparatus according to claim 11 , wherein in order to broadcast the generated motion data, the apparatus is further configured to insert the generated motion data into manufacturer-specific data portions of the BLE advertising packets.

13. The apparatus according to claim 1 , wherein the apparatus is encapsulated within a sealed enclosure.

14. The apparatus according to claim 13 , wherein the sealed enclosure comprises a strain rate sensitive material.

15. The apparatus according to claim 13 , comprising a non-rechargeable battery encapsulated within the sealed enclosure.

16. The apparatus according to claim 1 , wherein the apparatus is comprised in a wearable item.

17. The apparatus according to claim 16 , wherein the wearable item comprises one or more of:

a hip protector,

a limb protector,

a back protector,

body armor,

a glove,

a jacket,

a helmet,

a sports garment,

an activity monitoring garment,

a sensor equipped garment,

personal protective equipment, or

a medical device.

18. The apparatus according to claim 2 , wherein:

the first repetition frequency is less than or equal to 1 Hz, and

the second repetition frequency is greater than or equal to 50 Hz.

19. A method of monitoring user activity, the method comprising:

operating an apparatus in either in a first low power mode or a second high power mode,

wherein operating the apparatus in the first low power mode comprises:

generating motion data for a user; and

broadcasting the generated motion data in advertising packets of a wireless communication protocol, and

wherein operating the apparatus in the second high power mode comprises:

generating further motion data for the user; and

transmitting the further motion data to a remote device via a communication session established with the remote device.

20. A non-transitory computer-readable medium comprising executable instructions, which, when executed by a computerized device, cause the computerized device to perform a method of monitoring user activity, the method comprising:

operating an apparatus in either in a first low power mode or a second high power mode,

wherein operating the apparatus in the first low power mode comprises:

generating motion data for a user; and

broadcasting the generated motion data in advertising packets of a wireless communication protocol, and

wherein operating the apparatus in the second high power mode comprises:

generating further motion data for the user; and

transmitting the further motion data to a remote device via a communication session established with the remote device.