Citibank has launched a trial project in Manhattan that will see Gimbal provide its Bluetooth beacons and software to enable Citibank customers with iPhones to access ATMs and services usually provided by tellers outside of opening hours. Using the Gimbal Series 21 beacons, the project hopes to allow verified Citibank customers into the ATM lobbies in Manhattan, with the underlying goal of keeping non-customers out. That should save a lot on maintenance and cleaning costs, as those lobbies are often abused, but could also go a long way to reassuring some customers who might feel safer in an access-restricted environment – particularly after dark. Similarly, this model allows Citibank to provide more services to customers without having to hire more…