Utah implemented the nation's first law explicitly targeting VPN use for age verification. Senate Bill 73, signed by Governor Spencer Cox on March 19, treats users as accessing websites from Utah regardless of whether they use a VPN or proxy to mask their IP address. The law also prohibits websites from sharing instructions on how to use VPNs to bypass age checks, making Utah the pioneer in this regulatory approach.

The legislation faces significant technical challenges as it assumes web providers can reliably detect VPN traffic and determine true physical location. MaxMind and IP2Proxy can flag traffic from known datacenter IP ranges, but commercial VPN providers constantly rotate addresses, and residential VPN endpoints are largely indistinguishable from standard home connections, creating enforcement difficulties.

Autonomous System Number analysis catches traffic from datacenter networks but cannot identify personal VPN tunnels like those running on cloud VPS. The law creates a technical arms race between websites and VPN services, potentially driving users toward more sophisticated privacy tools while raising questions about enforcement capabilities and privacy protections in an increasingly digital world.