Security & SHA-256 PII Hashing

SignalRelay guarantees that no raw Personally Identifiable Information (PII) is transmitted over the network without standard normalization and cryptographic hashing.

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Normalization & Hashing Process

Before assembling the server-to-server payload:

1. Email: Leading/trailing whitespace is trimmed, text is converted to lowercase, and a SHA-256 hash is computed: hash('sha256', trim(strtolower($email))).
2. Phone: Non-numeric characters (hyphens, spaces, brackets) are stripped, country code in E.164 format is validated (e.g. +14155552671), and SHA-256 is applied.
3. Names: Converted to lowercase without punctuation prior to hashing.

Plaintext: "  Client.Name@Company.COM "
Normalized: "client.name@company.com"
SHA-256: "b4c9a289323b21a01c3e940f150eb9b8c542587f1abfd8f0e1cc1ffc5e475514"

Zero Database Retention

SignalRelay never stores visitor emails or phone numbers in your WordPress MySQL database for tracking purposes. Customer information exists solely in volatile PHP memory for the duration of the HTTP request and is immediately discarded upon dispatch.