The Breville Eye Q uses optical sensors to measure the darkness of your toast. Cool tech, but the toasting quality needs improvement.
Source: https://www.wired.com/review/breville-eye-q-toaster/

The Breville Eye Q uses optical sensors to measure the darkness of your toast. Cool tech, but the toasting quality needs improvement.
Source: https://www.wired.com/review/breville-eye-q-toaster/