[Eisenstein]

Retinal scans do not help; however, 'eye tracking', which is currently available in Quest Pro and should filter down to the consumer tier headset in a year or two, does. When Meta knows what you look at, and for how long, and in which patterns, then advertising will legitimately have some 'next level' shit to work with.

[__MatrixMan__]

The role of the retinal scans, I expect, has more to do with identifying which human is in the headset. In the metaverse, biometrics of that sort will be like cookies that you can't clear.