Hakan Sevimoğlu Hakan SevimoğluFreelance Developer · 18 yrs
Infrared beam · Thermal · 3D · AI camera

People Counting Systems: From Infrared Beam Counters to AI Cameras, What Does Each Measure?

When choosing a people counting system for a store, mall or retail chain, the real question is not the device brand but what it measures. A sensor that counts passes through a door and a system that measures who entered, who came together and whether they bought anything do not do the same job. On this page I explain the types, their differences and why I chose to count with AI on existing cameras in Visiqo.

Quick answerPeople counting systems come in four main types: infrared beam counters mounted at the door, thermal sensors that detect body heat, ceiling-mounted 3D stereo counting cameras, and software that processes existing IP camera footage with AI. Infrared beam counters are cheap but struggle to separate people walking side by side and to tell direction; 3D cameras are precise but need a separate device for every door. Visiqo, developed by Hakan Sevimoğlu, uses the store's existing cameras and AI to count entries, exits and group visits, builds a male/female and age profile, and calculates conversion rate with POS data; it does not store footage.

Written by Hakan Sevimoğlu · Last updated:

Visiqo · Smart retail analyticsLive counting, gender and age, POS conversion, tomorrow's visitor forecast and all branches in one panel

Types of people counting systems

  • Infrared beam counter: mounted on both sides of the door, it counts each pass that breaks the beam. Easy to install; struggles to separate people walking side by side and to tell entry from exit
  • Thermal sensor: detects people by body heat; unaffected by lighting conditions, provides no profile information
  • 3D stereo counting camera: mounted vertically on the ceiling, it separates people using depth; each door needs its own device and installation
  • AI camera counting: people are detected and tracked in the existing IP camera's footage; besides counts, it produces profile and group information

5 questions to ask when choosing

  1. Direction: does it count entries and exits separately, and can it give the number of people inside?
  2. Groups: can it count a family arriving together as a single visit? This is decisive for conversion rate
  3. POS link: does it match receipt data to produce a conversion rate?
  4. Multi-branch: can all branches be compared on a single dashboard?
  5. Personal data: is footage stored, and where is it processed?

Visiqo's approach

In Visiqo I do the counting with AI on the store's existing IP camera, without installing any extra device: every person crossing the virtual line drawn at the door is counted once, entries and exits are separated, a group becomes one visit, male/female and age group are derived, and footage is not stored. Conversion rate via POS integration, a 7-day AI visitor forecast and a multi-branch dashboard are all in the same system.

For device and installation details see AI camera people counter, for how counting works in the store see store customer counting system, and for the full product see Visiqo store analytics software.

What I offer

  • Four types

    Infrared beam, thermal, 3D, AI.

  • Direction

    Entries, exits, people inside.

  • Group counting

    Decisive for conversion.

  • Profile

    Male/female and age group.

  • POS link

    Receipts ÷ visits.

  • No footage stored

    Only counts and profile.

Technologies I use

PythonYOLOIP kameraPHPMySQL

Example projects

A selection of live projects serving real users.

How we work

  1. Free intro call

    We clarify needs, existing systems and goals together.

  2. Quote & roadmap

    Scope, technology, timeline and budget within 24 hours.

  3. Staged development

    Weekly demos and a live test environment.

  4. Launch & support

    Go-live, training and ongoing maintenance.

Free pre-analysisThe first meeting and roadmap are completely free, with no obligation.

Staged delivery and approvalYou review each module on a test environment before we move on.

Written scope and rightsScope, delivery and source code rights are defined in the contract.

Frequently asked questions

What is a people counting system?

It is a sensor or software system that counts people entering and leaving an area to derive traffic, occupancy and visit numbers.

Which people counting system is most accurate?

For side-by-side passes and direction, 3D stereo cameras and AI camera counting distinguish people better than infrared beam counters; when choosing, also look at group counting and POS integration.

Can an existing security camera be used to count people?

Yes. Footage from an IP camera that sees the door is processed with AI to count people; this is how Visiqo works.

Does a people counting system store personal data?

It depends on the type. Visiqo does not store footage; it keeps only counts and profile results such as male/female and age group.

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