Accidentally tied real identity to service via interapp comma? Beware.

Toomanyuserprofiles

I signed up to a retailer from within my banking profile. Does this mean that X-commerce has become aware of my account details in Y-bank?

Surely the banking apps are savvy enough to conceal the user identity from other apps? Is that wishful thinking?

I went to all the trouble of creating this webstore account with a pseudonym only to realise after the fact that it probably could read my true identity from the banking app within the same profile.

If apps have the 'read other accounts' permission installed do they report this home do you think, or do they just use this to speak to partner apps?

There's nothing I can do about this now. But it was really important to my peace of mind that things were nicely segmented.

matchboxbananasynergy

One thing to understand about apps communicating within the same profile is that both apps have to explicitly consent to communicating and exchanging data.

An app in one profile can't just arbitrarily see or get data from within other apps. That's not what user profiles provide; the sandbox that all apps you install are confined in does that already.

What profiles do provide is that two apps in separate profiles cannot see each other or communicate with one another, but again, this communication is not a free-for-all.

User2288

If you were able to sign up to the retailer "through" your banking app, then its very likely your bank and that retailer have some kind of a deal and do share some data. Its likely that your name and "some" banking info (like your bank account number, etc ) is passed to the retailer. Frankly financial institutions like to sell more data than that usually, and they do.