Payroll for construction relies on who was actually on site to work. A gate that records the actual name of a worker, rather than a borrowed ID, is the first line of defense against situations of ‘buddy punching’ and disputed hours. A face recognition attendance terminal at the gate checks the identity of the person arriving at or leaving the site and records the attendance event.
Uniwin-Global delivers IoT smart-devices for projects worldwide since 2016. The attendance terminals presented here are part of this portfolio and have been designed to withstand a construction site’s environment of dust, glare and shifting staff. Also of value to contractors, the terminal’s audit trail creates a compliance asset – for example, a safety inspector or labor auditor could ask who was on site at 7 a.m. and the terminal’s log would answer this without the contractor having to collate and produce paper sign-in sheets. Below we outline how specifying a WO501 5-inch face recognition terminal at a gate turns that gate into a means to create an auditable record of time and attendance.
What the Gate Terminal Does
Gate-facing 5″ terminal can recognize a face within a second. It is not a simple camera behind a glass. It is equipped with a binocular, wide-dynamic-range camera module that performs well under direct sun light and also in low light conditions. The terminal not only recognizes a face but also verifies an identity, enrolls on-site and also alerts for blacklisted individuals. Thus a new subcontractor can get registered at the gate instead of at a back office.
Binocular Cameras and Wide Dynamic Range in Harsh Light
Using a binocular camera system, the terminal captures facial information for recognition and liveness detection. The wide dynamic range helps keep the faces visible when the sun is behind the worker or when the gate is in shadow. The site entrance is rarely well lit.
Liveness Detection and Blacklist Alerts
Liveness detection helps prevent attempts to clock in using printed photos, videos or similar spoofing methods. Blacklisted faces can be flagged and, where permitted by local privacy and data-protection requirements, unknown-person events can also be recorded for site-security review.
Matching Capacity and Screen Size to the Site
One terminal is sufficient for a small gate crew but a large project with many rotating subcontractors may require additional headroom.
Capacity and Records Stored On-Device
The WO501 device can store a 5,000–20,000 face database on the unit. For most single-gate sites and many multi-contractor jobs this storage enables face check operations to be conducted without reference to constant cloud connectivity. Enrollment of a face to a face template is a very simple process, a supervisor takes a photo of a face at a terminal or via the management console and the face template is created within moments. This capacity therefore supports day to day attendance use while also allowing a large number of attendance records to be retained on the device.
Terminal Screen Sizes: 5″, 7″, and 8″
The Uniwin-Global terminal range is available in 5″, 7″ and 8″ screen sizes to fit different posts: a narrow gate post can be fitted with the 5″ terminal, larger screens are used in guard houses and main site offices where many people are queueing. Screen size is one selection factor; recognition capacity and software features should be confirmed for the selected model.
From Gate Check to Back-Office Data
Facial recognition at a gate only has value if the information collected actually reaches the relevant parties such as payroll departments and access logs. Although the terminal may continue to function in case of a network dip, the connection to upstream systems is important for synchronizing records and centralized management.
Web and Mini-Program Management
Depending on the selected configuration, terminals can work with a web-based management platform or supported mobile/mini-program solutions. Site supervisors can add employees one by one to the terminal, export attendance lists and view entries in the terminal with a phone or laptop.
MQTT, HTTP, and WebSocket Integration
For larger deployments, selected configurations can support interfaces such as MQTT, HTTP or WebSocket. So attendance records can be pushed to third party services or to your own server on your local network or over the wide area network, depending on the selected terminal and project configuration. Attendance records can be exported through the management platform, while direct payroll integration depends on the target system and project configuration. Uniwin-Global also offers Attendance and Access Control Management Platform and CommLink app for teams that require a managed service stack.
Choosing a Face Recognition Attendance Terminal
Start with headcount and gate count, not feature lists. A single 5-inch terminal handles a modest crew; a multi-gate site may require multiple terminals or a higher-capacity model, depending on headcount and traffic. Confirm the management path early, because that decides how the data flows to payroll. Think about where the terminal sits: a gate exposed to midday sun needs the wide-dynamic-range camera more than an indoor office reader does, and a site already running a third-party platform should confirm the required MQTT or HTTP endpoint before purchase rather than after.
Uniwin-Global produces these terminals under SKD/OEM/ODM models and can match up the enclosure/branding/software layer to a distributor’s local market. The hardware is backed by original grade components, sub-1% defect rate target, 1 year board warranty and a 2 hour response/48 hour resolution support service. Distributors can review the full face recognition attendance terminals family before selecting a model for a roll-out.
Conclusion
Real-name attendance on the construction site does not have to be all about the camera. Attendance data is created on the site. The attendance data from the binocular terminal at the gate is processed on the management console in the office and is also integrated with the payroll data. Same hardware can be used from one gate to a whole multi-site project. Cooperation models allow distributors to offer the system on the market under their brand. System integrators can start with the WO501 family when specifying access hardware.
We would love to hear from you about your proposed screen size and capacity as well as the cooperation model you are looking at. Please contact Uniwin-Global.
FAQ
Q: Can face recognition attendance work outdoors on a construction site?
Yes, provided used sensibly. The WO501 is equipped with a wide-dynamic-range binocular camera, designed to cope with very bright sunlight and also very low light levels at an open gate. Install the terminal under a weatherproof canopy or suitable enclosure, and protect it from direct rain and extreme heat in accordance with its rated environmental limits.
Q: How many workers can one terminal store?
The WO501 supports a 5,000–20,000 face database. This means that a single gate serving a few hundred regular workers can be accommodated within this range. Very large or highly fluctuating sites need to plan for the number of enrolled faces as well as for any other platform they are connected to.
Q: Does the system integrate with existing payroll software?
It can. Selected configurations can support interfaces such as MQTT, HTTP or WebSocket for integration with third-party platforms, with LAN or WAN deployment depending on the project. Exact field mapping depends on the target system, which is where OEM or ODM customization comes in.
Q: What cooperation models does Uniwin-Global offer for bulk deployment?
We offer SKD, OEM and ODM as well as finished-goods supply to distributors looking to badge products and integrators looking for customized software and/or enclosure solutions.
