Research in Motion yesterday announced a new service to allow corporate IT departments to manage fleets of iPhones and Android phones using their secure management features. I wrote last year at about this time that RIM had to refocus on its true strength, which is the management and security of corporate and institutional mobile digital communications. I said at this time that it was the only way that RIM would be able to maintain its differentiation in the face of the Apple and Android onslaught.