"Spyware" is a commonly used term with many definitions and interpretations. In general, it is meant to refer to products that collect information or install functionality that human users might not allow if they were fully aware of the actions being taken by the software. For example, a user might expect that tax software would collect a social security number and include it when filing a tax return, but that same user would not expect gaming software to obtain the social security number from that tax software's data.