| 摘要 |
Electronic devices can identify other nearby devices, and determine the relative positions of those devices, using a combination of techniques. Various devices are able to project one or more instances of a unique identifier, such as a barcode, which can be imaged by other devices. The devices also can communicate position and/or orientation information over a wireless sideband channel. By combining the information relating to the projected identifier with information collected over the sideband channel, devices can automatically determine the location of various devices and associate a user or device identity with those devices. A user of a device then can view relative locations of those devices on a display element, including information about the user of the device. Further, the relative position determinations can enable a user to perform certain functions with respect to another device based at least in part upon the position and/or identity of that device. |
