It's seems the New York Mets 2013 season wasn't a complete disaster. At a press junket last year, MLB tested the Apple iBeacon Technology at Citi Field, and let's just say, it was home run (yes...i know...terrible pun. Couldn't be helped tho)
Starting 2014, MLB is placing the Bluetooth LE Transmitters in 20 ballparks highlight park amenities and history for it's fans.
For the record, TL used this technology first for the Wilton office!