Define the camera comparison accurately
License plate recognition products can record plates and vehicle characteristics. Some offerings are portable or trailer-mounted; the wider Flock portfolio also includes video cameras. It is not accurate to describe every ALPR deployment as fixed or an entire vendor’s products as plate-only.
Flock’s own product documentation establishes those stated features. It is not independent evidence that one approach is universally faster, more accurate or more effective than another. This guide makes no comparative accuracy or case-outcome claim.
What a voluntary observation can add
A person may be able to explain context: what they noticed, when it happened and why it relates to a public request. Relevant information may concern a person or item as well as a vehicle. It may originate during ordinary activity in a place a roadside camera does not observe.
That is an opportunity for complementary information. It is not a reason to treat a recollection as an established fact. A clear submission separates direct observation from inference and states uncertainty rather than concealing it.
Media needs context too
A photograph or recording can be useful to review when it relates to the agency’s request and the receiving channel supports it. Explain the relevant place, time and detail. Follow the agency’s directions for footage; do not assume every website or app accepts every file type or size.
Preserve the distinction between having relevant material and interpreting what it proves. The receiving agency decides how to assess it under its procedures. This website does not collect evidence, and the illustrative app views do not establish supported video formats or retention controls.
Collection methods have different privacy questions
A voluntary contribution is a specific act of sharing, while automated camera collection can create records through a different process. The privacy questions depend on what is collected, who receives it and how it is used, retained and disclosed.
Lucas’s published policies govern its account, permission and information practices. The ability to choose a contribution does not make it anonymous or remove the receiving agency’s responsibilities. Explain the actual model rather than promising that privacy concerns disappear.
The practical objective
The intended role of Lucas and Sentinel is a clearer relationship between public requests and relevant community information. Information may complement existing investigative tools without replacing them. A department evaluation should assess that particular workflow and the context it produces.
Any later claim about improved results should be supported by defined evidence, permissions where needed and an accurate account of other contributing factors. Useful participation is a goal to evaluate, not a statistic to invent.
Keep the original and explain the relevant period
A short account can help a reviewer understand a file: which camera or device produced it, the relevant interval and what the contributor noticed. Keep the original material where possible and follow the receiving agency’s instructions for providing a copy.
NIST’s preservation guidance addresses the source and handling of digital material. That professional guidance supports asking good questions about provenance; it does not establish that a particular app upload has a complete chain of custody or proves the material authentic.
An attachment can also reveal unrelated people or places. Before sending, consider what is relevant and which route the agency recommends. Do not send case material to the marketing website or product support simply because an upload is convenient.
A camera clock is not always the event clock
If a recording shows a time you know is inaccurate, say so. Distinguish the camera-displayed time from your estimate of the actual event. Preserve the original rather than silently changing device settings or editing a timestamp to make the account look more certain.
UK government CCTV-recovery guidance recommends recording time discrepancies and favors native retrieval over filming a monitor. It is practitioner guidance from another jurisdiction, not a statement of US legal requirements. The practical lesson for a contributor is to retain the original and ask the receiving agency how it wants a copy supplied.
Do not operate an unfamiliar recording system, change its settings or risk losing files in an effort to prepare a tip. A clear description of the material and a request for instructions can be the appropriate first step.
Source: UK government: recovery and acquisition of video evidence
Different observations can answer different questions
An ALPR record can concern a vehicle at a place and time. A resident can explain an event, a person or an item that relates to a request. The information types can complement one another without either providing a complete account.
Flock’s current product information includes portable and mobile offerings, so it would be inaccurate to describe all ALPR as fixed. IACP also advises that an ALPR alert should be treated as a lead requiring confirmation rather than conclusive evidence. A voluntary tip likewise requires assessment; neither source should be treated as a verdict.
Compare the information each method collects, its purpose and the review it needs. Do not infer a universal accuracy rate, privacy advantage or recovery result from a difference in collection method.
Source: Flock Safety: license plate reader products · IACP: responsible use of license plate recognition
A useful handoff includes the explanation
A person might lawfully have a camera clip relevant to an agency request while being outside the originating city. The account should explain the place, period and connection to the request, then use the recipient and channel the agency supports.
The current feature determines which formats and sizes can be attached. If video or another file cannot be sent, ask the agency for its preferred route. An illustrative screen does not establish support for every camera system or file type.
The intended benefit is a clearer path for relevant information. Preserve uncertainty, keep originals and let the receiving agency assess the material within its own process. That is a more useful contribution than treating an upload alone as the end of the task.
Sources and further reading
- Flock Safety: LPR product documentation
- NIST IR 8387: preserving digital evidence
- UK government: recovery and acquisition of video evidence
- IACP: responsible use of license plate recognition
- Flock Safety: license plate reader products
Page reviewed October 27, 2026. External guidance explains the stated topic; it does not establish a product outcome or endorsement.