Bluetooth Connection Management Between Smartphone and Device

RE: Bluetooth Connection Management Between Smartphone and Device

GC92ES — Fri, 12 Jul 2024 12:12:43 GMT

Thank you Sigurd. This is the answer I was looking for, so to ensure a secure connection, I only can enforce that the user dissociates from the device. This way, no other device can connect until the current device is no longer "bonded."

This approach will help maintain security by preventing unauthorized connections.

RE: Bluetooth Connection Management Between Smartphone and Device

Sigurd — Fri, 12 Jul 2024 11:25:24 GMT

Hi!

Correct, you don't have control from the peripheral on what bonds the phone stores or not.

RE: Bluetooth Connection Management Between Smartphone and Device

GC92ES — Mon, 01 Jul 2024 10:38:58 GMT

Hi Sigurd, I already did that.

But when the smartphone is connected to my device without performing a disassociation from the smartphone, the smartphone maintains the bond with my device.
What I want to understand before asking myself if I'm doing something wrong is whether it is impossible to use my device to command the smartphone to disconnect from it. From my device with NRF52, I have no control over the connections maintained by the smartphone, correct?

Thank you for your help!

RE: Bluetooth Connection Management Between Smartphone and Device

Sigurd — Wed, 26 Jun 2024 11:50:47 GMT

Hi!

[quote user="GC92ES"]is there, for example, no way to delete the bonding directly from my device with the nrf52840 chip[/quote]

If you want to remove the bonding information that is stored on the nRF52 device, you can use the function bt_unpair() for that. See step 2 here: https://academy.nordicsemi.com/courses/bluetooth-low-energy-fundamentals/lessons/lesson-5-bluetooth-le-security-fundamentals/topic/blefund-lesson-5-exercise-2/

RE: Bluetooth Connection Management Between Smartphone and Device

GC92ES — Mon, 24 Jun 2024 11:23:15 GMT

What if I change the MAC address with which my device presents itself to the smartphone? Could it solve the automatic reconnection problem?

RE: Bluetooth Connection Management Between Smartphone and Device

GC92ES — Fri, 21 Jun 2024 09:54:11 GMT

Thank you for the response, I would like to focus on:

Requesting device: It is the device that sends the request to delete the bond (in this case, the client, i.e., the smartphone).
Server: It is the device that receives the request and performs the bond deletion operation (in this case, the nRF device).

I have checked the example you sent, so I would like to understand: is there, for example, no way to delete the bonding directly from my device with the nrf52840 chip, or do I always have to request it from the smartphone? If I wanted, for example, to remove the bonding with that device through disconnection or a button press, does this example allow me to do that?

RE: Bluetooth Connection Management Between Smartphone and Device

Sigurd — Mon, 17 Jun 2024 14:40:23 GMT

Hi!

Android:

We have the Bond Management Service that can be used to request deletion of the bond on the other device.

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.6.1/nrf/samples/bluetooth/peripheral_bms/README.html

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.6.1/nrf/libraries/bluetooth_services/services/bms.html#bms-readme

iOS:

iOS doesn't expose the Bond Management Service to the application. See this post: RE: Issue about ble_app_bms