A few companies are focusing on large-scale surface computing rather than personal electronics, either large multi-touch tables or wall surfaces. These systems are generally used by government organizations, museums, and companies as a means of information or exhibit display. Large scale multi-touch surfaces are manufactured by Finnish company MultiTaction on their 55" MT Cells (55" screens) who also have office locations in London, California and Singapore. MultiTaction also build unique collaboration software especially designed for multi-touch screens such as MT Canvus and MT Showcase.