https://devzone.nordicsemi.com/f/nordic-q-a/43412/nrf52840---ble-pairing-with-timeoutHi, I have used &quot;ble_app_gl&quot; example for pairing with random key and it runs great. Now i want to add push button for pairing purpose which is like..... when user enter random password during pairing process then my device need to wait for push buttonen-USTelligent Community 13Thu, 07 Feb 2019 08:04:45 GMThttps://devzone.nordicsemi.com/thread/169845?ContentTypeID=1Thu, 07 Feb 2019 08:04:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d92d6966-8d2d-4be2-9db6-5b95fda58241AndreasF<p>Hi.</p> <p>If you take a look at the message sequence chart for <a href="https://www.nordicsemi.com/DocLib/Content/SoftDevice_API_Doc/S140/v6-1-0/group_ble_gap_periph_lesc_bonding_pke_cd_msc">Bonding: Passkey Entry, User Inputs on Peripheral</a>, you can see that you are expected to enter a passkey when you receive the event <strong>BLE_GAP_EVT_AUTH_KEY_REQUEST</strong>. You reply the passkey with the API function <a href="https://www.nordicsemi.com/DocLib/Content/SoftDevice_API_Doc/S140/v6-1-0/group_ble_gap_functions?667#ga01e04f368c8e7b3aaa31740dbd53bd12">sd_ble_gap_auth_key_reply()</a>. </p> <p>The pairing sequence has a timeout value of 30 seconds, as you can see <a href="https://www.nordicsemi.com/DocLib/Content/SoftDevice_API_Doc/S140/v6-1-0/group_ble_gap_periph_pairing_timeout_msc">here</a>.</p> <p><br />What I suggest you do is that you add a if-statement in the event <strong>BLE_GAP_EVT_AUTH_KEY_REQUEST</strong>, where you check if your button has been pressed.</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>