There is. In fact there's a whole suite of products out there serving it.
At the base level you have DIY solutions (small LCD's, e-ink etc) which are loads of fun to build and can work quite nicely for some scenarios.
Another option that a lot of buildings are starting to use is iOS / Android apps along with a device in a wall mount (https://eventboard.io/ et al). Cheap (ish), easily replaceable and upgradeable hardware and apps that are quite affordable.
From here you then move into more dedicated devices which also provide some deeper integration with the environment. Traditionally this has something that has been handled by the AV world with products such as AMX's (http://amx.com/) RMS or Crestron's (http://www.crestron.com/) RoomView, however there's a bunch of other really exciting players around to like Condeco (http://www.condecosoftware.com/) which merit some consideration. Regardless of who's providing it, its at this level the tech starts to getting a little more exciting. Generally you begin to tie in with sensors (PIR, seat pressure, signal presence on laptop input etc) inside the room to provide analytics on occupancy, auto cancel meetings when there's a no show, integrate with NFC for handling access control or user auth etc. If you coming from the AV side the rest of the room can also start to interact with that booking information to (for example, parsing meeting info for video / teleconference details etc).
Cheers. I work in that industry, so a little involved.
Whilst not 'official' meeting minutes, for a personal record I jot down mind maps (generally on a tablet), however I know a few people that love these: http://www.livescribe.com/ for keeping a record.
Also, text to speech is text to speech. It's a pretty challenging problem with a single speaker and no room acoustics to worry about (headset mic) throw in a number of speakers and other sound sources and things get interesting. Even in courtroom environments where you have discreet audio feeds from each party AFAIK most places still use humans to create transcripts.
I've been in a few buildings where each door had a fat 15" LCD screen mounted beside it, displaying current and upcoming reservations. Even at my university they were beginning to implement them. You probably need good connections with commercial builders to compete in that space, though.
Or AV designers hired by the architects that specify these products for projects. Most commonly these are something like Crestron[1] or AMX[2] room scheduling panels.
If I were going to steal stuff from my office, I'd probably grab a couple of the 16-core workstations before disassembling the wall to get a $100 e-ink conference room schedule.
I assume he meant broadcasting current location. I don't think that's the actual application here anyway, but it's a real concern that thieves exploit via FB/Twitter announcements all the time.
I think the problem should be solved earlier, not at the end location but much earlier: I don't want to find out that a person is unavailable when I'm there.
