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Mobile Extractions Operational Explainer

What alternative names, usernames and identifiers should I search?

Do not search only for the person's name.

Mobile extractions can contain a person or account in several different forms: a telephone number, username, email address, profile ID, nickname, contact name or internal service identifier.

A good search list grows as the investigation develops.

Start with what you actually know

Suppose you are looking for David Mercer.

Your starting list might include:

Type Search value
Name David Mercer
Known nickname Dave
Mobile +44 7700 900123
Email david.mercer@example.test
Username dmercer82
Business Mercer Repairs
Vehicle AB12 CDE

Search important values separately before combining them.

That way you can explain which identifier produced the hit.

Let the extraction add new identifiers

A contact entry might link a name to a number.

A WhatsApp conversation may expose a service-specific account identifier.

An email account may reveal another address.

A photograph or device record may give you a useful filename, device name or account.

KnownDavid MercerStarting identity from the investigation.
Contact+44 7700 900123Phone number linked in a sourced contact record.
Appdmercer82Username appears in a messaging artefact.
AccountService ID 884192A stable platform identifier may survive later display-name changes.

Record where each new identifier came from.

It helps to mark identifiers as:

  • verified;
  • reported;
  • inferred; or
  • unconfirmed.

A phone number in a provider record is different from a nickname somebody typed into their contacts.

A service ID can be excellent for finding the same account again within that platform, but it does not automatically prove who controlled the account.

Exact values matter

Keep:

  • full telephone numbers;
  • exact usernames and spelling;
  • email addresses;
  • numeric account IDs;
  • profile URLs where relevant;
  • device names and identifiers;
  • known aliases and misspellings.

A changed display name may hide from a name search while the underlying service ID remains the same.

The practical point is: build a sourced identity map rather than betting the search on one name. Every reliable new identifier gives you another way to find the same person, account or device in the extraction.

Reference: MEX-027Mobile Extractions