Google Find My Device Network implementation

[Nareshpatel]

Hello, 

I need to implement Find My Device for nRF52833. 

From Sample I could find "samples/bluetooth/fast_pair/Locator Tag" example. I tried to go through it. but I could not able to map with fast pair specification(Fast Pair  |  Google for Developers). 

I want to check in which function advertisement is prepared ?

How keys(account keys,anti-snoofing keys) are sent in encrypted ?

In the advertisement which data we are sending(like fast pair UUID, Model id, anti snoofing keys, unique mac address,salt field ) etc ?  

[Edvin]

Sorry, maybe I jumped to conclusions initally. Most people asking about this says that they don't see the fast pair popup in Android. I am not sure exactly how the keys are being used. It is based on Google/android specification, so I don't think there is much room for customization exactly there. 

I believe the advertisement data is set in NCS\nrf\subsys\bluetooth\services\fast_pair\fmdn\state.c, in e.g. fmdn_adv_data_async_update() it is set several places. At least there it calls bt_le_ext_adv_set_data().

Is it something in particular that you want to add in your advertising data?

Best regards,

Edvin

[Nareshpatel]

No problem edvin. Thank you for your support. 

I want to know do we use automatic advertisement or custom advertisement ? We need to use custom advertisement . We want to modify as per Mobile App team need. 

If I need to change advertisement data where I could implement custom advertisement in source code ? 

I want to map google Fast pair specification and source code also.  Could you please help me on this ?