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Using a fixed passkey pairing model for BluNRG-MS BLE NPU

Question asked by Ghada Louremi on May 17, 2018

Hi !
I have to implement a connection method with an authentification between a blueNRG-MS BLE device and a mobile app. The BLE device has no I/O capabilities so following the BLE spec v4.1 soi have to implement just works pairing model. But i want to implement a passkey method with a known fixed pin. it's true that the passkey generates a random TK every time, But Is it possible to use the passkey method with a fixed known pin  ?