Reader Morgan writes :
After read about the Grand Central setup on Gizmodo I decide to take a expression around when I passed through Grand Central on my way home tonight . First off , they ’re scattered all over the independent concourse ( one over cut 27 and several along the going boards were the most visible ) .
Risking a Homeland Security smackdown , I decide to require some police bear around about them , and if they were indeed , cellular relays . After a studying look and intermit the MTA officer said , “ I have no estimation what they are ” and turned away . Eventually I ascertain a Customer Service guy who after a few , “ Why are you asking ? ” and , “ I ’m not hypothecate to say anythings ” let on that they were tv camera .

Altough I was n’t about to take any photos after flagging myself as the queer eccentric , I noticed that there was n’t any visible lens on the twist but there was something resembling a motion detector . Perhaps some kind of IR motion tracker ?
More guess after the link .
Another reader , Anthony , drop a line that the devices are not there to improve cell response , but to jam it , as part of the certificate ramp up for the RNC . There is a fear of remotely - triggered twist , according to his information .

Related
Mystery Wireless Transmitter in Grand Central Station[Gizmodo ]
https://gizmodo.com/mystery-wireless-transmitter-in-grand-central-station-20486

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