In an example implementation according to aspects of the present disclosure, a method may include establishing, by a host computing system, a secure connection to a user computing system via a wireless network, wherein the host computing system and the user computing system are in physical proximity to each other. The example method further includes providing, by a host computing system, an operating system session to the user computing system through the secure connection while the host computing system and the user computing system remain in physical proximity to each other. The example method also includes providing, by a host computing system, data associated with a user of the user computing system to the user computing system via the operating system session through the secure connection, wherein the data associated with the user of the user computing device is stored in a data store of the host computing system.