How to implement data exchange between mini-programs?

[spyx1]

Hello. I can’t find in the documentation how to implement data exchange (json) between mini-programs. localstorage and files (/assets, /data) are isolated by one mini-program.
Can I access a file from another app? Is it possible to get the full path to a file so that it can be read from any mini-program?
Or some other modes of existence could be created between the mini-programs and the dial.

[spyx1]

Zepp os 2

[MyoungXUE]

Zepp OS 3 implemented this function, @zos/fs module openSync can specify the Mini Program ID, access to the target Mini Program /data directory files.

https://docs.zepp.com/docs/reference/device-app-api/newAPI/fs/openSync/

What is your device? GTR4 has been gradually updated to Zepp OS 3.

[spyx1]

My device bip 5.