In this hypothetical scenario, can you guarantee your anonimity?

Let's say there's this regular guy who wants to stay completely anonymous. Here's his game plan:

* He relocates to a different state.
* He buys a brand-new laptop and pays in cash (or uses a debit/credit card if cash seems suspicious).
* He wipes Windows off the laptop and installs Tails OS.
* He only connects to the internet in public Wi-Fi spots far away from home.
* He gets his phone numbers from those temporary number services that …

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