There is clearly at least a niche market for "transparent devices". See https://www.crowdsupply.com/sutajio-kosagi/precursor https://www.crowdsupply.com/sutajio

There is clearly at least a niche market for "transparent devices". See https://www.crowdsupply.com/sutajio-kosagi/precursor https://www.crowdsupply.com/sutajio-kosagi/precursor for example.