Abstract: Methods and systems for matching user information between data sets, while preserving data privacy are provided. Some examples relate to matching subsets of users from a first device to subsets of users from a second device, based on a first set of indications and a second set of indications, respectively, to calculate how long it takes for a user to travel to a location of interest, after the user is provided with directed content. A conversion rate may be determined based on how many instances at which a user travels to the location of interest, within a conversion window, after the user is provided with the directed content. The conversion rate may be compared to a baseline conversion rate to determine a change in conversion rate. The change in conversion rate may correspond to an impact of the directed content in causing the user to travel to the location of interest. User data is not shared from the first device to the second device, and vice-versa.

Abstract: An accessory table adapted for detachable attachment to an article of furniture, such as a desk, is disclosed. The accessory table comprises a rigid floor supported post and an attachment assembly for the post, exerting vise action on the top and bottom surfaces of the desk. The post carries at least one table at the outer end of an arm, the latter being pivotable through a full circle. The table is also rotatable about its central vertical axis at the end of the arm. The post is hidden by an aesthetic sheath.