Systems and methods for determining locations of collocated electronic devices

A first electronic device comprising:

• one or more processors;
• and
• memory, wherein the first electronic device is in communication with one or more first displays and one or more first input devices, wherein the one or more processors are configured to execute one or more programs stored in the memory, and wherein the one or more programs include instructions for performing a method comprising:
• before establishing a multi-user communication session between the first electronic device and a second electronic device, wherein the first electronic device is collocated with the second electronic device in a physical environment, wherein the first electronic device has a first pose relative to a first reference origin of the first electronic device in the physical environment, and wherein the second electronic device has a second pose relative to a second reference origin of the second electronic device in the physical environment:
• determining a shared reference origin in a physical environment based on:
• first map data determined by the first electronic device;
• and
• second map data determined by a second electronic device;
• after determining the shared reference origin, receiving first information from the second electronic device, the first information including:
• the second pose of the second electronic device relative to the second reference origin of the second electronic device;
• and
• an offset of the second reference origin of the second electronic device relative to the shared reference origin;
• and
• displaying, via the one or more first displays, a user interface element at a location that is based on the first information, the user interface element selectable to establish the multi-user communication session between the first electronic device and the second electronic device.

A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a first electronic device that is in communication with one or more first displays and one or more first input devices, cause the first electronic device to perform a method comprising:

• before establishing a multi-user communication session between the first electronic device and a second electronic device, wherein the first electronic device is collocated with the second electronic device in a physical environment, wherein the first electronic device has a first pose relative to a first reference origin of the first electronic device in the physical environment, and wherein the second electronic device has a second pose relative to a second reference origin of the second electronic device in the physical environment:
• determining a shared reference origin in a physical environment based on:
• first map data determined by the first electronic device;
• and
• second map data determined by a second electronic device;
• after determining the shared reference origin, receiving first information from the second electronic device, the first information including:
• the second pose of the second electronic device relative to the second reference origin of the second electronic device;
• and
• an offset of the second reference origin of the second electronic device relative to the shared reference origin;
• and
• displaying, via the one or more first displays, a user interface element at a location that is based on the first information, the user interface element selectable to establish the multi-user communication session between the first electronic device and the second electronic device.