You're right Bill D - the weight is an issue. I guess the tuners could be inside the guitar at the body end, as opposed to the neck - there are some electric guitars that have this type of configuration (i.e. tuning at body end rather than head end).

Anyway, I'm glad the discussion is taking place. Maybe between us we could invent that Holy Grail, the Guitar That Never Goes Out Of Tune!

As for bending notes, etc., I'm sure there must be a way round that - need to think...

Remember this was primarily aimed at an acoustic rather than a gadget-laden electric - although the same benefits could apply to that.

I guess the monitoring interval could be programmed in, so you could make it check every minute instead of continuously. Then in between, you would be able to play normally.

Not sure how the monitoring would work yet though - that's a mjor challenge. It would need to measure the frequency of the open string when played. How would it 'know' you were doing this - any ideas from techie types out there?