The New Alternative to UDIDs Seems to Be The MAC Address, But Privacy Issues Still Loom
Earlier this year, Apple said it was deprecating the ID system that developers and mobile ad networks have relied on to target consumers with personalized experiences or ads. At the time, there wasn’t a clear substitute to Apple’s Unique Device IDs (or UDIDs), but I mentioned the Wi-Fi MAC address as a possibility.
The MAC, or Media Access Control, address is an identifier that’s assigned to networked devices (whether they’re smartphones or laptops). Most developers seem to be targeting the MAC address of the Wi-Fi interface on iOS devices. Because it’s
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