SURVEILLANCE BASICS

Automated license plate readers (ALPRs). ALPR cameras automatically scan and record license plates on passing cars. The data can be stored for months or years, creating detailed records of where people drive, work, worship, and visit.

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Facial recognition. Facial recognition systems compare images of people’s faces against databases, such as driver’s license photos or mugshots. These tools can misidentify people, especially people of color, and can be used to track who attends protests, religious services, or community events.

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Cameras & CCTV. Fixed security cameras, doorbell cameras, and public cameras can be linked together into large networks. When footage is centrally stored or shared, it can be searched and analyzed in ways that go far beyond basic crime investigation.

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Drones. Police and other agencies use drones to capture aerial video and photos of neighborhoods, gatherings, and traffic. Drones can quietly record wide areas for long periods of time, including backyards and spaces people expect to be private.

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Data sharing. Surveillance tools often feed into regional or national databases. Information collected in one city can be shared with many agencies, including federal partners and private vendors, making it hard for residents to know who has their data or how it is used.

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Real-time crime centers. Real-time crime centers bring together camera feeds, ALPR data, social media monitoring, and other tools into one hub. Staff can monitor multiple neighborhoods at once and quickly search through large amounts of data about people’s movements.

WHY PRIVACY MATTERS

Surveillance is often described as something that only affects people who are “doing something wrong.” In reality, many modern systems collect information about everyone, all the time, whether or not they are suspected of a crime. License plate readers, camera networks, and data-sharing agreements can quietly build detailed profiles of ordinary people going about their daily lives.

This kind of constant monitoring changes how communities feel and behave. When people know they might be watched at a protest, a clinic, a place of worship, or a community meeting, they may decide to stay home. That chill on everyday activity harms free speech, organizing, and participation in public life.

Surveillance also does not impact everyone equally. Systems are often concentrated in working-class neighborhoods and communities of color, and tools like facial recognition have higher error rates for Black and Brown residents. Without strong privacy protections, surveillance can reinforce existing inequalities and lead to more stops, searches, and investigations based on flawed or biased data.

Protecting privacy is not about hiding wrongdoing. It is about preserving the space to live, learn, travel, and connect with others without being constantly tracked. Clear rules, transparency, and community oversight help make sure powerful technologies serve people, instead of the other way around.

COMMON SAFEGUARDS

When surveillance technologies are used, a few basic safeguards can greatly reduce the risk of harm and abuse.

• Retention limits. Clear rules that require deleting data after a short, defined period unless it is truly needed for a specific investigation.
• Audit logs. Automatic records of who accessed the system, what they searched, and when, so that misuse can be detected and addressed.
• Access controls. Strong restrictions on which staff can use each system, with training and consequences for improper use.
• Public reporting. Regular public reports that show how often tools are used, what types of cases they support, and basic information about outcomes.
• Approval rules. Requirements for written policies, community input, and formal approval from elected officials before new surveillance tools are adopted or existing tools are expanded.

FREQUENTLY ASKED QUESTIONS

Is surveillance legal?

Some types of surveillance are clearly allowed by law, while others are limited by the Constitution and court decisions. For example, police usually need a warrant to search your phone, but can often record license plates or public camera footage without notifying you. Local communities can pass stronger rules to limit how and when agencies use these tools.

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Who has access to the data?

Access depends on the system and the policies in place. In many cities, local police, regional task forces, and sometimes federal agencies or private vendors can see or copy surveillance data. Strong rules can limit access to people who truly need the information for a specific, documented purpose.

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How long is data kept?

Retention periods vary widely. Some systems delete data within days, while others keep it for months or years by default. Without clear, public rules, agencies may keep information much longer than most people expect, which increases the risk of misuse or data breaches.

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Can I find out if I have been surveilled?

In most cases, people are not directly notified when their car is scanned, their image is captured on a camera, or their data is shared. You may be able to request certain records through public information laws, but those processes can be complicated and slow. Local transparency rules can require clearer reporting about how often tools are used and in what neighborhoods.

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What can I do about it?

You can ask your city council, county officials, or police oversight bodies what technologies are in use and what policies govern them. You can attend public meetings, share your concerns, and support groups that are working for transparency and community control over surveillance. Staying informed and speaking up helps shape the local rules that protect everyone’s privacy.

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Does surveillance actually reduce crime?

The evidence is mixed and often limited. Some tools may help solve specific cases, but there is little proof that broad, always-on monitoring by itself makes communities safer. Investments in housing, health, education, and community programs are consistently linked to long-term safety, while unchecked surveillance can damage trust between residents and public agencies.