Permission options in "Shared Access" function


first, i would like to thank the makers who made this unbelieveble app.

I want to use the shared access function in my project. but since it will cost energy, i think it would be better to know more and ask the question here, before i use it.

my question :

Can i grant specific permission to each phone that i shared with ?
Or at least, would each phone has specific thing to be recognized as a different phone from one to another, so we could set up the permissions on the sketch ?

I want to make each user could only view data that intended for that user.

Thank You !

No. You share it, and everyone who has the code has the same read-only access only when the project is running.

No again.

You can code permissions for different users if it is essential for your project.