PII
Personally identifiable information — anything that can distinguish or trace a specific individual, alone or when combined with other information that's linked or linkable to them.
NIST's standard definition includes the obvious direct identifiers (a name, a government ID) and, less obviously, linkable information — details that look harmless alone and become identifying only in combination. A delivery neighborhood, an order time, and a phone number's area code, none identifying by itself, can together point to one household.
A caller orders pickup without giving a name. No single detail captured identifies anyone alone. But the same combination showing up at the same time most Thursdays, across a handful of calls, can let someone recognize the same regular customer without ever learning their name.
The central mistake is treating PII as limited to the obviously sensitive fields and assuming everything else is safe to handle loosely. A narrower one specific to voice: assuming that because spoken audio isn't text, it doesn't count as identifying information — a voice is itself a distinguishing characteristic, in the same broad family as a fingerprint.
What's collected in the course of running the service — order details, contact information, the interaction data a call generates — is described in full, by category, on Privacy Notice.
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