https://devzone.nordicsemi.com/f/nordic-q-a/14569/single-click-on-the-links-issueI only hope that their devices can link their mobile phones, other mobile phone links may not link, but I didn&#39;t want to enter a password, directed broadcast method can, about what to do?en-USTelligent Community 13Mon, 20 Jun 2016 08:52:35 GMThttps://devzone.nordicsemi.com/thread/55639?ContentTypeID=1Mon, 20 Jun 2016 08:52:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:894afa15-44a0-4f5f-ace9-b2169ac31226FormerMember<p>If you just want one specific phone to connect to your device, you can use whitelisting. Whitelisting: only connect requests from devices in the whitelist will be accepted.</p> <p>If the devices will be bonded (encrypted link), the security module Peer Manager can handle/create the whitelist.</p> <p>If you don&#39;t plan to use encryption, the devices should simply be connected, you can add the address of the central device manually to the whitelist. <a href="https://devzone.nordicsemi.com/blogs/782/bluetooth-smart-and-the-nordics-softdevices-part-1/">This</a> tutorial shows to add a device to a whitelist.</p><div style="clear:both;"></div>