PBC Blog · surveillance / plate readers / source-check

Reflective spray beats Flock cameras? Real privacy issue, risky plate workaround

A short Facebook Reel points at a real civil-liberties concern — automated licence-plate readers can turn ordinary driving into searchable location data. But the suggested workaround, coating a plate with reflective spray, is the part that fails both the evidence test and the legal-risk test.

Bottom line: oppose overbroad ALPR/Flock-style surveillance through transparency rules, retention limits, audit logs and local oversight — not by altering or coating licence plates. Independent testing says the Rust-Oleum trick did not defeat LPR systems, and Canadian plate rules generally require plates to stay unobstructed, visible and photographable.

Captured Facebook Reel: share/r/1F1GSBU1Tc, resolved by yt-dlp to Facebook video ID 1464380789077296 from Digital Taxidermy. PBC preserved the Reel, metadata, thumbnail, frame sheet and source trail.

What the Reel claims

The visible caption says: “Remember, only a criminal would spray their license plates with rustoleum 214944 reflective coating to avoid being spied on by flock cameras.” The wording is sarcastic, but the implied claim is clear: reflective coating on a licence plate can interfere with Flock-style automated plate-reader cameras.

What is real

The surveillance concern is real. Flock says its ALPR systems collect licence-plate images, vehicle characteristics, date/time stamps and camera location. Privacy commissioners and Canadian reporting have warned that ALPR location records can create surveillance risks if retention, access and sharing are not tightly controlled.
Canada has the same class of issue. The Canadian debate is not always Flock specifically. Toronto Police publish an ALPR explainer. B.C.’s privacy commissioner previously investigated Victoria Police ALPR use. Montreal’s 2026 controversy involved Genetec/Cloudrunner-style vehicle cameras, a Flock-like issue but not the same U.S. network.
Rust-Oleum Reflective Coating is a real product. It is sold as a visibility/safety coating, not as a plate-reader countermeasure.

What does not check out

IPVM’s public test bought Rust-Oleum 214944 and tested it against five LPR systems — Rekor, Genetec, Axis, Hanwha and Verkada — in daylight, nighttime/IR and multiple coat thicknesses. The reported result: it did not block or degrade plate reads in the tested conditions.

The technical problem is that viral phone demonstrations do not reproduce how LPR systems usually work. A phone flashlight held close to a plate can create glare. Dedicated plate readers are typically positioned differently and use calibrated visible/infrared imaging and exposure controls. A viral glare trick is not the same as defeating deployed ALPR.

Legal-risk note: PBC is not giving legal advice. But B.C. Motor Vehicle Act Regulations section 3.03 says a number plate must be unobstructed and free from dirt or foreign material so it can be plainly seen and accurately photographed by prescribed enforcement cameras. Ontario’s Highway Traffic Act section 13 similarly requires plates to be clean/visible and prohibits devices that prevent automated camera photographs. Other provinces and U.S. states use similar visibility/obstruction rules.

Claim-by-claim

Claim	Evidence label
Flock/ALPR cameras raise privacy concerns.	Supported. ALPR systems collect plate/location/time/vehicle records, and Canadian privacy sources stress retention, access, audit and transparency limits.
Reflective spray can reliably hide a plate from Flock/LPR cameras.	Not supported. IPVM’s public test reported no degradation across five LPR systems and several lighting/coating conditions.
Spraying a licence plate is a smart privacy tactic.	False / risky. It can make the plate appear altered or obstructed, create a traffic stop, and may violate plate-visibility/camera-readability rules.
The Canadian story is identical to U.S. Flock deployments.	Needs context. Canada has ALPR use and controversy, but vendors, policies, retention and data-sharing rules differ by police service and province.

Better public-policy questions

Who approved fixed or mobile ALPR cameras?
Is there a public privacy impact assessment?
How long are non-hit plate reads retained?
Who can search the database, and is every search audited?
Is data shared outside the local agency, province or country?
Can ordinary drivers find out whether their plate was searched?

Sources

Source package

Source note Claim table Frame sheet