SCD-1 Spirit Box & Portal session with a reverse effect. Had responses come through with & without the reverse effect on. The SCD-1 was my first GhostHunterApp and it's still my favorite. I almost always get relevant responses come through it. Not always but most times I get direct responses to questions asked and what I'm talking about. I can't say for sure who or what I'm communicating with. But there does seem to be something intelligent coming through these devices.