Is there a way to refuse to re-pair with an Android device?

RE: Is there a way to refuse to re-pair with an Android device?

Hung Bui — Wed, 14 Dec 2022 10:18:51 GMT

Hi Sdi_kei,

Could you show us what exactly is the "Pair Configuration Request" ? I guess it's different on each phone manufacturer to display such message or not.
But what we need to look into here is that if the peripheral actively send the encryption request or not. And if that trigger the message. If it's the case, we can check if you can modify the peer manager to not send the security request when connect to a bonded peer. And let the bonded peer do the task.
You may want to capture a sniffer trace to see what occurs over the air.

RE: Is there a way to refuse to re-pair with an Android device?

Turbo J — Wed, 14 Dec 2022 09:16:03 GMT

Not really possible.

If you delete the pairing on Android, you still have the old pairing key in the device.

Upon connecting, PM will notice the key and offer it to the android device since the address matches. That is what makes android display the pairing dialog, since because the key is missing on the "host".

There is no way of knowing that the host key was deleted at this point.

And PM_EVT_CONN_SEC_CONFIG_REQ only arrives after the user confirmed the re-pairing dialog on android.