https://devzone.nordicsemi.com/f/nordic-q-a/28738/how-to-set-static-passkey-between-two-nrf52832hello,ereryone!One nrf52832 as ble_central,and another nrf52832 as ble_peripheral. and the ble_peripheral (nrf52832 )set static passkey: #define SEC_PARAM_BOND 1 #define SEC_PARAM_MITM 1 #define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_DISPLAY_ONLYen-USTelligent Community 13Tue, 02 Jan 2018 11:27:52 GMThttps://devzone.nordicsemi.com/thread/113874?ContentTypeID=1Tue, 02 Jan 2018 11:27:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5544cce6-6c3f-4a55-ab54-365d54cff0b4Petter Myhre<p>You don&#39;t need a physical keyboard and display when using static passkey, but you still have to use BLE_GAP_IO_CAPS_KEYBOARD_ONLY or BLE_GAP_IO_CAPS_KEYBOARD_DISPLAY. Then when you get the BLE_GAP_EVT_AUTH_KEY_REQUEST event just reply with the static passkey. See <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v5.0.0/group___b_l_e___g_a_p___c_e_n_t_r_a_l___b_o_n_d_i_n_g___p_k___p_e_r_i_p_h___o_o_b___m_s_c.html?cp=2_3_1_1_0_2_1_3_5_2_2">this</a> MSC for more information.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/113875?ContentTypeID=1Tue, 26 Dec 2017 03:26:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c0883946-1394-484a-bc21-386eb8afb730jenkey.zhu<p>Thanks Petter,but in fact the central has no keyboard and display,how the central get the static key?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/113873?ContentTypeID=1Fri, 22 Dec 2017 09:54:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:734311a9-60fa-44e6-9fa5-6473781a0f13Petter Myhre<p>The central must use BLE_GAP_IO_CAPS_KEYBOARD_ONLY or BLE_GAP_IO_CAPS_KEYBOARD_DISPLAY.</p> <p>Other than that nothing special. The central doesn&#39;t know that the passkey is static.</p><div style="clear:both;"></div>