[PierceJoy]

There’s a difference between them having a record of your purchase and them accessing that record for business analysis reasons. If Walmart operated a medical clinic, would you comfortable with their corporate data scientists accessing your health records?

[detourdog]

I’m: not comfortable with merchants knowing what I purchase.

[sneak]

The merchants have a right to know what they sell; it is the same data.

You can (and should) always pay cash anyway. Then they know what is sold, but not to whom.

[detourdog]

They can know what they sell. I just don’t think the default should let them know who they sell to.