People counting privacy is about collecting visitor numbers without identifying individuals, and being open with customers about what is collected. Many counters record only anonymous counts, such as how many people crossed a line each hour, rather than images or personal details.
The privacy risk depends on the technology. A sensor that outputs only a number is very different from a camera that stores footage or a system that tries to recognise faces or track individual devices. Where footage is recorded or individuals could be identified, the data may count as personal information under the Privacy Act 1988.
Businesses should know exactly what their sensors capture, where data is processed, how long it is kept and who can see it. Notices at the entrance, a clear privacy policy and a documented purpose help show customers and regulators that the system is used responsibly.
A common mistake is assuming "analytics" means no privacy obligations. Video-based or Wi-Fi-based systems need more care, and obligations can also arise through state surveillance laws. Get legal advice for your situation instead of relying on a supplier's general statement. Ask the supplier exactly what data leaves the device, where it is stored and whether it can be switched off or deleted on request.
Choosing privacy-friendly sensors from the start is simpler than retrofitting, and it protects customer trust.