two different users same device explanation

[innofarah]

1- When I try to upload to my web3.storage space using a different email address than my account's email as a test (in a node.js application using the w3up-client login method and then through uploadCar), I get in my application the error "Agent has no proofs for did:key:..." and I am properly not able to upload data using it, since I gave it no delegation.

2- However also, if I then use my account's email, verify it, upload data, and then try again to use the other email as a login email, the data upload is successful.

• I was able to get this result (in point 1-) after I deleted the access file in .config/w3access which was created after the first login using my account's email. Otherwise (before the deletion), I was able to access my account's space and upload data by using a different email than my account's email. Is that just because I am on the same device and the same access data is being used I guess? Is that the proper and expected behavior? In that case 2 users that use the same device would be able to directly access the same space without explicit delegations? or is there more to it to be done delegation-wise that I am just not aware of? Is this the expected use of "login" to just grant access to a device/agent? Thanks for clearing any misunderstanding.