Engaging exercising devices with a mobile device

1. A server comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause at least:

receiving by the server a first sensor data stream from a first exercising device, wherein the first sensor data stream comprises time stamps,

receiving by the server a second sensor data stream from a mobile device, wherein the second sensor data stream comprises time stamps,

correlating by the server the first sensor data stream with the second sensor data stream based on the time stamps comprised by the first sensor data stream and the time stamps comprised by the second sensor data stream,

determining by the server that the first exercising device is engaged with the mobile device, and

providing from the server indication to the first exercising device and the mobile device that the first exercising device and the mobile device are engaged with each other, and subsequently

receiving by the server a third sensor data stream from a second exercising device, wherein the third sensor data stream comprises time stamps,

receiving by the server a fourth sensor data stream from the mobile device, wherein the fourth sensor data stream comprises time stamps,

correlating by the server the third sensor data stream with the fourth sensor data stream based on the time stamps comprised by the third sensor data stream and the time stamps comprised by the fourth sensor data stream,

determining by the server that the second exercising device is engaged with the mobile device, and

providing from the server indication to the second exercising device and the mobile device that the second exercising device and the mobile device are engaged with each other, and

changing information displayed on a display of the mobile device automatically when the second exercising device is engaged with the mobile device,

wherein the correlating comprises identifying identical time stamps, and

wherein the server is configured to estimate that a user is using a specific exercising device by correlating sensor data received from the mobile device and sensor data received from said specific exercising device.

2. The server according to claim 1 , wherein the server is configured to store and process sensor data received from the first exercising device and the second exercising device.

3. The server according to claim 1 , wherein the server is configured to store and process sensor data received from the mobile device.

4. The server according to claim 1 , wherein the first sensor data stream or the third sensor data stream is based on a first acceleration sensor and the second data stream or the fourth sensor data stream is based on a second acceleration sensor.

5. The server according to claim 1 , wherein the first sensor data stream or the third sensor data stream is based on a first angular velocity sensor and the second data stream or the fourth sensor data stream is based on a second angular velocity sensor.

6. The server according to claim 1 , wherein the server is configured to receive the first sensor data stream or the third sensor data stream from an ergometer, a gym exercising device, a fitness device, a sports device, a weight lifting device, an exercise bike, a treadmill, a rowing machine, or a cross trainer.

7. The server according to claim 1 , wherein the server is configured to receive the second sensor data stream or the fourth sensor data stream from a tablet, a smartphone, a wearable sensor, or an external sensor.

8. The server according to claim 1 , wherein the server is configured to receive a fifth sensor data stream from a wearable sensor or an external sensor.

9. The server according to claim 1 , wherein the server is configured to allow a user to remotely read-out at least a part of at least one of the first sensor data stream, the second sensor data stream, the third sensor data stream and the fourth sensor data stream.

10. The server according to claim 1 , wherein the server is remotely accessible by a person in order to analyse a user session.

11. The server according to claim 1 , wherein the server is configured to estimate an activity type of a user based on the correlated data streams.

12. The server according to claim 1 , wherein the server is configured to receive the second sensor data stream or the fourth sensor data stream from a wrist-watch.

13. The server according to claim 1 , wherein the server is configured to receive the second sensor data stream or the fourth sensor data stream from a smartwatch.

14. The server according to claim 1 , wherein the first exercising device, the second exercising device and the mobile device each have a classification task to produce semantic events.

15. The server according to claim 1 , wherein the server is in the form of a mobile device.

16. The server according to claim 8 , wherein any of the first exercising device, and the second exercising device are enabled to act as a server having control over the user interface of the mobile device.

17. Use of a server in connection with a first exercising device, a second exercising device and a mobile device, wherein the server comprises at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause at least:

receiving by the server a first sensor data stream from a first exercising device, wherein the first sensor data stream comprises time stamps,

receiving by the server a second sensor data stream from a mobile device, wherein the second sensor data stream comprises time stamps,

correlating by the server the first sensor data stream with the second sensor data stream based on the time stamps comprised by the first sensor data stream and the time stamps comprised by the second sensor data stream,

determining by the server that the first exercising device is engaged with the mobile device, and

providing from the server indication to the first exercising device and the mobile device that the first exercising device and the mobile device are engaged with each other, and subsequently

receiving by the server a third sensor data stream from a different second exercising device, wherein the third sensor data stream comprises time stamps,

receiving by the server a fourth sensor data stream from the mobile device, wherein the fourth sensor data stream comprises time stamps,

correlating by the server the third sensor data stream with the fourth sensor data stream based on the time stamps comprised by the third sensor data stream and the time stamps comprised by the fourth sensor data stream,

determining by the server that the second exercising device is engaged with the mobile device, and

providing from the server indication to the second exercising device and the mobile device that the second exercising device and the mobile device are engaged with each other, and

changing information displayed on a display of the mobile device automatically when the second exercising device is engaged with the mobile device,

wherein the correlating comprises identifying identical time stamps, and

wherein the server is configured to estimate that a user is using a specific exercising device by correlating sensor data received from the mobile device and sensor data received from said specific exercising device.

18. The use according to claim 17 , wherein the use takes place in a gym, in connection with a training session, in connection with a sports session or in connection with a fitness session.

19. An arrangement comprising a server, a first exercising device, a second exercising device and a mobile device, wherein the server comprises at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause at least:

receiving by the server a first sensor data stream from a first exercising device, wherein the first sensor data stream comprises time stamps,

receiving by the server a second sensor data stream from a mobile device, wherein the second sensor data stream comprises time stamps,

correlating by the server the first sensor data stream with the second sensor data stream based on the time stamps comprised by the first sensor data stream and the time stamps comprised by the second sensor data stream,

determining by the server that the exercising device is engaged with the mobile device, and

providing from the server indication to the first exercising device and the mobile device that the first exercising device and the mobile device are engaged with each other, and subsequently

receiving by the server a third sensor data stream from a different second exercising device, wherein the third sensor data stream comprises time stamps,

receiving by the server a fourth sensor data stream from the mobile device, wherein the fourth sensor data stream comprises time stamps,

correlating by the server the third sensor data stream with the fourth sensor data stream based on the time stamps comprised by the third sensor data stream and the time stamps comprised by the fourth sensor data stream,

determining by the server that the second exercising device is engaged with the mobile device, and

providing from the server indication to the second exercising device and the mobile device that the second exercising device and the mobile device are engaged with each other, and

changing information displayed on a display of the mobile device automatically when the second exercising device is engaged with the mobile device,

wherein the correlating comprises identifying identical time stamps, and

wherein the server is configured to estimate that a user is using a specific exercising device by correlating sensor data received from the mobile device and sensor data received from said specific exercising device.

20. The arrangement according to claim 19 , wherein the exercising device and the second exercising device are configured to participate in pairing with the mobile device.

21. The arrangement according to claim 19 , wherein the mobile device is configured to participate in pairing with the first exercising device and the second exercising device during a session with the first and second exercising devices.