How is this different from public surveillance?+
A protected zone is a narrowly scoped, institution-controlled, legally-bounded perimeter around a specific protected location and against a specific authorized watch list. It is not a general surveillance system, it does not monitor the public at large, and it does not produce identification data on anyone outside the watch list. The legal frameworks (SORNA registries, court-issued restraining orders, district trespass authority) are mature and well-understood. The technology applies them more effectively to the locations and people they were always intended to protect.
What happens to people who are wrongly identified?+
Every alert includes a match confidence score, and low-confidence matches do not auto-dispatch. Designated institutional reviewers (SRO, security director, DV advocate) make the escalation decision, every time. The audit log records every alert, every review, and every action taken, which is available to anyone who later claims false identification. The misidentified person has a documented forensic record of exactly what happened, when, and who made the call. This is meaningfully more accountable than the camera-and-radio system most schools and shelters operate today, where identification mistakes leave no trail at all.
What about civil liberties oversight?+
The system is designed to be audited, not to evade audit. Every match, every escalation, every dispatch is logged with hash-signed chain of custody. The audit trail is available to civil liberties oversight bodies, defense counsel, plaintiff counsel, school board oversight committees, and institutional review boards on legitimate request. We have engaged with civil liberties experts during the design process and welcome ongoing review. A system designed to protect children and survivors should be willing to defend its own decisions in front of the people who hold power accountable.
How are watch lists managed and what happens when they change?+
Watch list entries are tied to the underlying legal authority and expire when the authority does. State sex offender registry data refreshes on the cadence the state prescribes (typically nightly to weekly). Restraining orders are loaded with their expiration dates and auto-remove on expiry. Trespass warnings are managed by district policy with documented review periods. The institution controls the watch list. The system enforces what is currently lawful, not what was lawful in the past.
What about MAC randomization on modern phones?+
Modern phones do randomize the MAC address they broadcast to unknown networks, but in proximity scanning the device still emits identifiable beacons, and most users carry secondary devices (smartwatches, earbuds, fitness trackers) that emit consistent identifiers. Watch list matching is built around the full device cluster a person carries, not a single MAC. The combination of multiple device signatures plus temporal correlation produces a high-confidence match even where a single phone rotates its MAC. Low-confidence matches are flagged for human review rather than dispatched.
Who pays for this in a school district or shelter context?+
Funding pathways are mature and varied. School districts use Title IV-A school safety grants, state DOE safety funding, COPS Office grants, and bond-funded capital improvement budgets. Domestic violence shelters and survivor programs use VAWA grants, state DV coalitions, OVW (Office on Violence Against Women) funding, and private foundation support. Family courts use state judicial branch funding for protective order compliance. Many institutional pilots are funded by these existing pathways without new appropriation. Contact us to scope funding options for your jurisdiction.
How do we pilot this responsibly?+
Standard pilots run 90-180 days at a single institution, with formal review by the institution's legal counsel, civil liberties oversight (where applicable), and operational leadership before deployment. The pilot starts with the cleanest watch list category (typically state sex offender registry for schools, court-issued restraining orders for survivor housing) and expands deliberately as the response protocols mature. The Digital Tripwire team provides legal-review templates, escalation protocol documentation, and ongoing operational support throughout the pilot. The goal is institutional confidence, not technology adoption.
