If an advertiser could link its own ID to a particular device, it could keep targeting ads. Apple has a policy against fingerprinting, but no real way of enforcing it, according to marketing tech experts. Private Relay could act as that enforcement, cutting data off at the source, because it hides IP addresses—like a virtual private network—which is the string of code that identifies a person’s device and network.
Marketers are worried that Private Relay could apply to almost all…
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