Hi maxwellito, we're working on something along these lines. Sent you a tumblr message but figured I'd post here as well. Just applied to YC. Would be nice to talk. Overall pretty underwhelmed by the "digital signage" industry and think we could push things forward using affordable commodity hardware.

Over the next few years, think this is a viable / utilitarian medium for delivering on some of the promises of ubiquitous augmented reality.