Reader Morgan writes:
After reading about the Grand Central setups on Gizmodo I decided to take a look around when I passed through Grand Central on my way home tonight. First off, they’re scattered all over the main concourse (one over track 27 and several along the departure boards were the most visible).
Risking a Homeland Security smackdown, I decided to ask some police standing around about them, and if they were indeed, cellular relays. After a studying look and pause the MTA officer said, “I have no idea what they are” and turned away. Eventually I found a Customer Service guy who after a few, “Why are you asking?” and, “I’m not supposed to say anythings” divulged that they were cameras.
Altough I wasn’t about to take any photos after flagging myself as the curious type, I noticed that there wasn’t any visible lens on the device but there was something resembling a motion detector. Perhaps some kind of IR motion tracker?
More conjecture after the link.
Another reader, Anthony, wrote that the devices are not there to improve cell reception, but to jam it, as part of the security ramp up for the RNC. There is a fear of remotely-triggered devices, according to his information.
Related
Mystery Wireless Transmitter in Grand Central Station [Gizmodo]
https://gizmodo.com/mystery-wireless-transmitter-in-grand-central-station-20486