Read the statement by Michael Teeuw here.
What mirror and screen to use?
I have tried some mirrors, with an LCD monitor, but have come to only get too dim screen with the Pilkington chrome spy 6 mm, or I end ud seeing too much background light from the monitor (A monitor the school gave me for the projekt, which uses glass tubes as bagground light).
Do i have to use an OLED or what else combination do i need for it be good at a reasonable price?
Any screen should work, as long as it’s well against the glass it should be fine.
As for the mirror glass, 70% reflective/30% passthrough seems to be the norm for “Smart mirror glass”… it goes by different names and such from manufacturers.