L2Ping and RSSI

Dear all,

I'm interested in what communication is possible with unpaired bluetooth 
devices.  I am aware that I can ping an unpaired device using L2ping and 
the hardware address of the device.  I'd like to know whether I can get 
any link information from a ping, such as RSSI?  All the HCI tools seem 
to require a 'proper' (authenticated, paired) connection.

And, if anyone has the time, I'd love to better understand the 
difference between an unpaired connection as established by l2ping (I'm 
going by the code) and a full bluetooth HCItool-compatible connection 
which I assume requires pairing.  The official standard is not what I'd 
describe as especially accessible..!

Thanks,
Rob.


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