I haven’t seen anything that suggests this is already an option.
I think this would be a useful feature for road going cars where logging could be activated as and when needed as opposed to running all the time where if the memory stick gets full it’ll be overwritten.
My Emerald K6 Ecu can do logging but not to the extent the ADU-7 can, but even my Ecu can start stop logging with a key press.
I would imagine you clever guys at Ecumaster could implement this with ease.