====== Read out the MAC address of Polar chest straps (and other BLE devices) ======


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Document ID: 1646425738

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Change Description:

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Reference Documents:

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Person in Charge: Felix Koneberg

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Reviewer:

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===== Requirements =====

  * Download and install the nRF Connect App for Android (iOS cannot read out MAC addresses) 
https://play.google.com/store/apps/details?id=no.nordicsemi.android.mcp&hl=de&gl=US

===== Steps =====

  * Keep the Polar device next to you.

**Note**: Better put other Polar devices further away from you to avoid confusion with an unintentionally activated other Polar device.

  * Open the app and tap on “no filter” so that you can filter out unwanted devices

{{ :public:polar_mac_01_filter.png?400 |}}

  * Adjust the RSSI Threshold further to the left 
  * confirm with the tick symbol

{{ :public:polar_mac_02_filter.png?400 |}}

  * press "scan" on the top of the app
  * Then keep the Polar device close to the phone and activate it by rubbing the area on the inside of the Polar (A) with slightly wet fingers:

{{ :public:polar_mac_04_strap.png?400 |}}

  * Once the device turns on, you should see it in the scan list with its MAC address (here F0:BA:E4:78:EE:5F). 

{{ :public:polar_mac_03_scan.png?400 |}}

**Note**:

  * In the screenshot below, instead of “two” you the name should be “Polar” or whatever device you are looking for.
  * If you wait too long, you have to press the “scan” button again.
  * Since there is no off button on the Polar devices, bring the current Polar device out of range if you want to read out another one to avoid confusion.