Providing an operating system session

A system comprising:

• a host computing system, the host computing system further comprising:
• a battery to power the host computing system,
• a processing resource,
• a memory resource,
• a data store to store user data an operating system, and
• a first wireless networking device and a second wireless networking device, wherein the processing resource, the memory resource, the data store, the first wireless network device, and second wireless networking device are electronically coupled via a system bus;
• and
• wherein the host computing system is housed in a case having no physical communications ports;
• a user mobile computing system, wherein when the user mobile computing system is in physical proximity to the host computing system in an enterprise environment and is wirelessly communicatively coupled to the host computing system via an ad hoc network through a secure connection via the first wireless networking device of the host computing system, wherein an operating system session is provided to the user mobile computing system via a remote desktop protocol session only while the user mobile computing system remains in physical proximity to the host computing system to allow the user mobile computing system to interact with the host computing system to access the user data stored in the data store on the host computing system, wherein the physical proximity is a distance of 25 feet or less;
• and
• a server in remote physical location to the host computing system, and is wirelessly communicatively coupled to the host computing system through a second secure connection established over a cellular network via the second wireless network device of the host computing system to periodically synchronize the user data with the remote computing system via the second secure connection.

A host computing system comprising:

• a battery to power the host computing system;
• a processing resource;
• a memory resource;
• a data store to store user data and an operating system;
• a first wireless networking device;
• and
• a second wireless networking device to connect the computing system to a server via a cellular network, wherein the computing system periodically synchronizes the user data with the server via a second secure connection, server being in a remote physical location to the host computing system,
• wherein the battery, the processing resource, the memory resource, the data store, and the wireless network device are electronically coupled via a system bus and are housed in a case having no communications ports, wherein the host computing system is wirelessly communicatively coupled to a user mobile computing system in physical proximity to the host computing system via an ad hoc network through a secure connection via the first wireless networking device, wherein the physical proximity is a distance of 25 feet or less in an enterprise environment, wherein an operating system session is provided to the user mobile computing system through the secure connection between the user mobile computing system and the first wireless networking device of the host computing system via a remote desktop protocol session to allow the user mobile computing system to interact with the host computing system to access the user data stored in the data store on the host computing system, wherein the user data is only available to the the user mobile computing device through the operating system session while the user mobile computing device remains in physical proximity to the host computing system.