https://devzone.nordicsemi.com/f/nordic-q-a/19351/characteristics-readHi all, is there a way to set a characteristics when a read command arrive from APP, or it&#39;s necessary to set it before to read? I see for example battery service, it update the battery level with a timer clock and when you read, you read the pasten-USTelligent Community 13Wed, 01 Feb 2017 16:54:26 GMThttps://devzone.nordicsemi.com/thread/75067?ContentTypeID=1Wed, 01 Feb 2017 16:54:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:21873c45-5d00-48a4-803c-a0d24bc62fc1Petter Myhre<p>Yes. It is possible if you use authorization. See <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v3.0.0/group___b_l_e___g_a_t_t_s___r_e_a_d___r_e_q___a_u_t_h___m_s_c.html?cp=2_3_0_1_1_2_4_3_13">this</a> MSC for more information. There should be some questions in here about how to implement this.</p><div style="clear:both;"></div>