Oooh that's interesting! I should try this on my home computer!
Most advanced 'tech' I've used are paper blackout shades in the summer. I have my bed near big windows at the end of my apt and I slept so much better with the shades. It's interesting how street noise seems almost blocked out when light pollution is too.
I have a hard time operating without blackout curtains anymore. Living with a 3rd shift nurse sort of forces you to make accommodations around the home, and now I feel like Gollum when the sun creeps around a corner.