US Patent 8983868 Using location information in electronic commerce

When a request to purchase an item using an account of a user is received, a geographic location of a user device when the request was made is determined, the user device used to make the request. If the location from where the request was made is an unexpected location of the user, a determination is made as to the likelihood of the user being at the determined location. The likelihood of the user being at determined location is determined based on social networking information of the user. The purchase request is processed based on the determined likelihood of the user being at the determined location. The feature of checking the location of where a purchase request is made from can be enabled or disabled by the user.