Chaum’s idea was to break the linkage between the issuance and usage of a credential. This means that when Alice shows her credential to the website, all the site learns is that Alice has been given a valid credential. The site should not learn which issuance flow produced her the credential, which means it should not learn her exact ID; and this should hold even if the website colludes with (or literally is) the issuer of the credentials. The result is that, to the website, at least, Alice’s browsing can be unlinked from her identity. Imn other words, she can “hide” within the anonymity set of all users who obtained credentials.
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If you want a little more control, however, it might be worth using Samsung Expert RAW. To enable it, open the Camera app, tap “More,” then select “Expert RAW.” The first time you do this, the device will install the Expert Raw app, and it will appear as a separate app on your phone, but you'll still be able to open that app from the main camera app. In Expert RAW, you can experiment with slower shutter speeds and lower ISO, which might make for brighter and more detailed shots without overexposing.