https://devzone.nordicsemi.com/f/nordic-q-a/3208/nrf51822-re-authenticatingHI In the case the keyboard miss the LTK（or bonding info）, how can I start a reconnect or re-authenticating to let the host and device to generat a new one? When I replies without the keys like the below pictures ，the central reply me nothing . en-USTelligent Community 13Mon, 28 Jul 2014 10:07:17 GMThttps://devzone.nordicsemi.com/thread/11804?ContentTypeID=1Mon, 28 Jul 2014 10:07:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fad4ec0c-81ed-4679-a448-6a2290dded84P&#229;l H&#229;land<p>Hi biao,</p> <p>This depends on how the peer handle it. In this case you would most likely have to delete the bonding from the iPhone for it to issue a new Pairing Request and do a re-authentication.</p> <p>BR Pål</p><div style="clear:both;"></div>