Thanks Said for blowing the dust off this. I tried a project with my 1-Button prototype that involved pressing the button during meditation every time my attention returned after losing focus. I didn’t know if I would be able to train myself to do this without messing with my meditation practice too much, but it turned out to be pretty easy, and I actually became a bit dependent on it. Somehow pressing the button and feeling the vibration every time I noticed my mind had drifted because an aid to holding my attention.