Abstract: This invention details systems and methods for users in an online marketplace to easily enter one or more items using a smartphone or other compatible mobile device, then uploading the newly entered item(s) in a batch upload process directly onto the online marketplace. One aspect of the invention describes the process of using a mobile device to photograph or add images and easily capture the primary information needed for an ad listing. The process of capturing the detailed information utilizes a mobile device's voice recognition technology as an alternative to the device's keypad to streamline the data entry process. A second aspect of the invention details the system's process of batch uploading the final items directly into the online marketplace. The final aspect of the invention describes the process whereby a user may later login to the web-based system to edit or add optional details to the ad listing if desired.

Abstract: A method for estimation of relative coordinates between at least two parts of a system comprising the steps of: (A) providing each of at least two parts of the system with at least one coordinate sensor; (B) measuring a set of relevant coordinates for each part of the system; and (C) processing each measurement result performed in the step (B) to estimate the relative coordinates between at least two parts of the system. The relative coordinates are selected from the group consisting of: {relative position coordinates; relative position rate (velocity) coordinates; relative position acceleration coordinates; relative angle coordinates; relative angular rate coordinates; and relative angular acceleration coordinates}.