[ec109685]

There are capabilities like local storage that are often disabled in private browser mode.

[ubernostrum]

I've actually found a few online stores which now check for this and redirect you to a "turn off private browsing to browse our site" message. It's moderately annoying that they refuse to even let me see what they have for sale until I agree to let them use my hard drive.

[chopin]

I wouldn't want to be customer of such a site.

Problem solved.