I agree with Rob here, Piezoelectric displays are expensive to build, need quiet a bit of tuning and are almost always non-repairable. When I was working on th

I agree with Rob here, Piezoelectric displays are expensive to build, need quiet a bit of tuning and are almost always non-repairable. When I was working on the Tactis and researching about all the mechanism' that exists, I came across Electromegnitism based mechanisms' very rarely, It is an underexplored way of building braille displays, mainly because of the actuation problem when being pressed against, we are trying to come up with a solution in our V2. Hopefully we get there.