https://devzone.nordicsemi.com/f/nordic-q-a/13824/confusion-on-directed-advertisingI want my device to pair only with a single central device at a time. So once it gets paired, it should not be able to pair with any other device. For this purpose I use directed advertising after pairing. But somehow, even directed advertising is beingen-USTelligent Community 13Wed, 18 May 2016 13:32:09 GMThttps://devzone.nordicsemi.com/thread/52827?ContentTypeID=1Wed, 18 May 2016 13:32:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9dd390da-786d-4650-bc08-deb853b014f0run_ar<p>Please note that you cannot rely on the whitelist or direct advertising feature alone. An attacker can use the same address as your known peer, thus passing this barrier quite easily. So in addition you should make sure you are not refreshing the bond if that happens.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/52826?ContentTypeID=1Fri, 13 May 2016 16:01:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2473b6a2-4a13-40a5-a62f-fcc9d659847fDarshan<p>Yes checked code, and its falling to FAST advertising mode. Will fix it, and will let you know the result.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/52825?ContentTypeID=1Fri, 13 May 2016 07:34:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fa053a22-12c4-48e1-b1c2-a86c70e6a78aUlrich Myhre<p>Directed Advertisements are using an implicit whitelist for the single peer you are advertising to, so this should not be picked up by others. Are you sure that the code is not falling back to normal advertisement after some time?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/52824?ContentTypeID=1Fri, 13 May 2016 04:18:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d8f875eb-7e40-47b6-967c-eea2a30cc174Thangaraj<p>Hi, You should use whitelist .. For your use case check about it</p><div style="clear:both;"></div>