We have a couple of meeting rooms in our offices and we ran a word-of-mouth booking system. Word-of-mouth booking systems are notoriously unreliable, as so frequently proved by people barging into active meetings with clients ("Sorry!").

Enough is enough and we wanted to get an off-the-shelf digital signage solution but pricing didn't go well with our frugal company DNA. Hacking on the other hand does and we never pass up an opportunity to roll our own solutions (and EYODF).

What do we need?

We explored feature lists of commercial solutions and there is a ton features we don't need. No need for