Hi Dirk, If you check connman, BlueZ, obexd, you will find out how an dbus agent works. They are meant for 'credentials' already since you can't use signals because they provide no feedback (no error/reply). If you depend just on signals: 1. you will loose the ability to detect if there is any process that can provide credentials 2. you won't be able to react on process responsible for credential disconnecting from bus 2. no implicit timeout 3. anyone can reply and multiple replies can happen which are tricky to define a good strategy who to trust In the other hand you may have a bigger problem since the agent/process responsible for credentials will probably be either connman or NetworkManager and both already have their own mechanisms to collect credentials which could cause some problems such as NoReply error. Although I expect connman to work it out since its storage is accessible on the daemon which is not the case on NM that needs to access its agents. -- Luiz Augusto von Dentz Engenheiro de Computa??o
