https://devzone.nordicsemi.com/f/nordic-q-a/90390/developing-custom-ble-authentication---how-to-protect-services-characteristicsHi- In our application we are not using pairing, but instead want to use a proprietary authentication scheme were we right a passkey to an unprotected characteristic and based on that we want to unlock the ability to read/write the other services +en-USTelligent Community 13Wed, 27 Jul 2022 13:31:08 GMThttps://devzone.nordicsemi.com/thread/378934?ContentTypeID=1Wed, 27 Jul 2022 13:31:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0569c7b9-709d-49c4-92c1-97ab4029fe66Kenneth<p>Authorization seems to be the way to go yes, you can add authorization on both read and write, ref:<br /><a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s132.api.v7.3.0%2Fgroup___b_l_e___g_a_t_t_s___r_e_a_d___r_e_q___a_u_t_h___m_s_c.html">https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s132.api.v7.3.0%2Fgroup___b_l_e___g_a_t_t_s___r_e_a_d___r_e_q___a_u_t_h___m_s_c.html</a>&nbsp;<br /><a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s132.api.v7.3.0%2Fgroup___b_l_e___g_a_t_t_s___w_r_i_t_e___r_e_q___a_u_t_h___m_s_c.html">https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s132.api.v7.3.0%2Fgroup___b_l_e___g_a_t_t_s___w_r_i_t_e___r_e_q___a_u_t_h___m_s_c.html</a>&nbsp;<br /><a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s132.api.v7.3.0%2Fgroup___b_l_e___g_a_t_t_s___w_r_i_t_e___c_m_d___a_u_t_h___m_s_c.html">https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s132.api.v7.3.0%2Fgroup___b_l_e___g_a_t_t_s___w_r_i_t_e___c_m_d___a_u_t_h___m_s_c.html</a>&nbsp;</p> <p>I would think (hope) searching through the ble projects for sd_ble_gatts_rw_authorize_reply() can give some results.</p> <p>Edit: Also check out:<br /><a href="https://devzone.nordicsemi.com/f/nordic-q-a/66820/how-to-deal-with-the-characteristic-read-event/273665">RE: How to deal with the characteristic read event?</a>&nbsp;</p> <p>Kenneth</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/378759?ContentTypeID=1Tue, 26 Jul 2022 14:47:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0289bbce-d9b3-48db-b7d5-f5b0ecd58047scotzark<p>Maybe this is what is needed?</p> <p><span>GATTS Read Request with Authorization</span></p> <p><span>This way we can check if each client is authorized before the reply?&nbsp; Is there an example of how to set this up with the 17.1.0?</span></p> <p><span></span></p><div style="clear:both;"></div>