Nail polish hack for Glass mirror: We have >100 Glass devices at Georgia Tech, and I've been investigating the nail polish trick mentioned by others to protect Glass's mirror from scratching and delamination in harsh conditions. So far I've been quite pleased. I used Sally Hansen's "Hard as Nails" clear nail polish (see image) to put a coating on the mirror and then hung it by the earpiece to dry (see image). As it turns out, I put too much on - it gave the mirror a slightly wavy look to it when you look at it and it crept over the side a bit - in theory not a good thing and noticeable if you look closely. However, image quality is still very good. Next time I'll put less on. After 17 days, including a week-long trip to Osaka, Japan where a typhoon gave us misty and rainy weather for the ISWC wearables conference, I am quite pleased (see image with the stone table). The surface seems to have been protected from the weather, and I'm less paranoid about scratching the mirror by accident. Anyone else have results to share on this hack?