Who Is Really at the Controls? Optional Face-ID Driver Identity on Tower Crane Shifts

▌  APPLICATION NOTE  ·  OCTOBER 2026  ·  DRIVER IDENTITY AND AUTHORISED OPERATION

Who Is Really at the Controls? Optional Face-ID Driver Identity on Tower Crane Shifts

A tower crane shift begins with a person walking to the cab and starting work. On paper that person is the listed operator. In practice, the machine has no idea who it is. It may notice that a load is heavy or that a jib is slewing, but it cannot tell whether the person at the controls is the named, authorised operator or somebody else. On a site with one crane and one operator per shift this hardly matters. On a larger site with rotating crews, hired drivers and night shifts, it leaves a gap between the record on the wall and the person on the seat.

The ZNAO-TG2 tower crane safety monitoring system offers optional face-ID driver identity control, which closes that gap by tying crane operation to a recognised driver. The word optional matters. Some sites want the feature and some do not, and the system is built so that driver identity is a choice rather than a fixed part of every installation. Where it is enabled, the crane associates operation with an identified person, and that association is what makes a shift accountable. Standards such as ISO 12480-1 and LOLER 1998 put duties on the people who plan and supervise lifting; a record of who operated is part of meeting those duties.

01  THE PROBLEM OF AN UNNAMED SHIFT

Most crane monitoring answers questions about the machine. The ZNAO-TG2 senses load weight, moment, trolley radius, hook height, slew angle, wind speed and tilt, and it raises alarms when a threshold is crossed. That is a rich picture of what the crane is doing. What it does not answer by itself is who is doing it. A log that describes a heavy lift or a threshold alarm describes an event, and an event without a name is harder to act on when a supervisor later reviews a shift.

The gap appears in ordinary ways. A driver signs on for a shift and hands over to a colleague at lunch; a visiting operator covers a break; a night crew takes over the same machine. Each change is normal, and each is a moment when the person at the controls can differ from the person in the record. Optional face-ID driver identity control is the function that closes that gap, by making the machine aware of who is operating rather than only of what the crane is doing.

▌  AN UNNAMED SHIFT  The machine can read the load and the motion, but by itself it cannot tell who is at the controls.

▌  OPTIONAL BY DESIGN  Face-ID driver identity is an optional function, enabled where a site wants operation tied to a recognised driver.

▌  TWO QUESTIONS  Identity answers who is operating now and whether that person is authorised to operate at all.

02  WHAT OPTIONAL FACE-ID CONTROL DOES

Where face-ID driver identity control is enabled, the crane links operation to a driver it recognises. The purpose is not to replace the roster or the supervisor; it is to give the machine a way to associate the work it performs with the person who performed it. That association is the raw material for accountability. It connects the data the black box already produces, such as load, radius, height, slew and the alarms it logs, to a named individual rather than to an anonymous cab.

The function is deliberately narrow. It identifies a driver and links operation to that identity; it does not measure performance, decide competence or set its own rules about who may work. Those judgements stay with the site, the training record and the lift plan. What the system provides is the fact that the machine knew who was operating, so that a later review has an anchor. Without that anchor, a log of events describes a crane and not a person, and the reviewer has to reconstruct the shift from other records.

▌  LINKED TO A PERSON  Operation is associated with a recognised driver, so the work of a shift attaches to an identity.

▌  NOT A JUDGE  The function identifies a driver and links operation to that identity; it does not decide competence or performance.

▌  AN ANCHOR FOR REVIEW  It gives a later review a named starting point, so a log describes a person and not only a machine.

03  AUTHORISED OPERATION AND THE MEANING OF A SHIFT

Authorised operation is a simple idea with real weight. A tower crane should be driven by someone who is trained and permitted to drive it, and a site wants to be able to show that this was the case. Driver identity control supports that position by making the link between person and machine explicit. Where the site enables it, the crane recognises a driver before operation is associated with that driver, so the shift begins with an identity as well as a start-up routine.

The shift itself then has a clearer shape. The changeover, the first lift, the alarms and the end of the shift all belong to one named person. For the supervisor, that makes the daily record simpler to reconstruct. For the operator, it makes the responsibility explicit, which most professional drivers welcome, because a clear record also protects the person who did the job correctly. Accountability runs in both directions, and a named shift is fairer than an anonymous one.

▌  TRAINED AND PERMITTED  Driver identity supports the expectation that the crane is driven by someone trained and authorised for it.

▌  A CLEARER SHIFT  Changeover, first lift, alarms and shift end all attach to one named person.

▌  FAIR TO THE OPERATOR  A clear record protects the driver who did the job correctly, because responsibility is no longer vague.

04  ACCOUNTABILITY WITHOUT SURVEILLANCE THEATRE

It is worth separating accountability from surveillance. Driver identity control is not built to watch a cab; it is built to answer a specific question about who was operating. The system already logs alarms for audit, inspection and accident back-trace. Driver identity simply adds a name to that record where a site chooses to enable it. The value is in the clarity of the record, not in the volume of data collected.

That distinction should shape how a site introduces the function. A brief explanation of what the feature does and does not do prevents the assumption that the cab is being filmed for its own sake. The same black box already works with ONVIF IP cameras for hook visualisation, so a crew may reasonably ask what is being recorded and why. The honest answer is simple: the hook cameras serve the lift, and driver identity serves the shift record, and each is a tool the site chooses to use.

▌  NOT A CAMERA WATCH  The function answers who was operating; it is not designed to watch the cab continuously.

▌  A NAME IN THE LOG  Where enabled, it adds a driver identity to the alarm log the system already keeps.

▌  EXPLAIN THE SCOPE  Telling the crew what the feature does and does not do prevents needless concern about surveillance.

05  WHERE IT SITS IN THE SYSTEM

Driver identity is one function of a Linux-hosted black box that already senses load weight, moment, trolley radius, hook height, slew angle, wind speed and tilt, runs overload and threshold alarms, and offers group anti-collision and zone limiting. It lives in the same unit, shown on the same 11.6-inch 1920 by 1080 sunlight-readable industrial display in the cab, and powered from the same 220 V AC input. Enabling it does not mean a second system bolted to the crane.

Because the host is a Linux platform with 4G plus 433M wireless and RS485, USB, LAN and display outputs, the driver identity of a shift can sit alongside the other data the unit produces. A site can keep the function local to the crane, or route the association onward where its procedures require it. Optional is the right place for it: the crane is complete without it, and a site that values a named shift can switch it on without disturbing how the rest of the black box works.

▌  ONE UNIT  Driver identity runs in the same Linux host as the crane readings and alarms, on the same cab display.

▌  SHARED OUTPUTS  It uses the same 4G, 433M, RS485, USB and LAN outputs as the rest of the system.

▌  COMPLETE WITHOUT IT  The crane is fully functional without the option; a site that wants a named shift can enable it.

PROCUREMENT IMPACT

●  If several drivers share a crane across shifts, optional face-ID driver identity is the function that ties operation to a named person.

●  Decide whether the site wants driver identity enabled at all, because the system is built to work with or without it.

●  Confirm how the identity sits with the existing alarm log, so the shift record and the equipment record stay connected.

●  Explain the scope to the crew, since a feature that links operation to a person is easier to accept when its limits are clear.

●  Keep the roster and the training record as the authority, and use driver identity as the record that the machine was operated by the person it names.

WHAT TO WATCH

●  Watch the process around the feature, because identity is only as good as the roster that backs it.

●  Watch the operator changeover, since that is the moment the record is most useful and most easily confused.

●  Watch the relationship with the alarm log, because a name without context is less useful than a name with context.

●  Watch the crew conversation, and be plain that this ties shifts to people rather than turning the cab into a studio.

●  Watch the plan. Driver identity strengthens accountability and does not by itself make an unsafe lift safe.

ABOUT  ZN Industrial (Shandong Zhinuo) designs and manufactures crane safety monitoring systems, positioning systems and mechanical auxiliary handling equipment for overseas construction, industrial and steel markets.

Standards and regulations vary by market — local rules still govern your site.

▌  CONTACT  shandongzhinuo@outlook.com  +86 176 6371 0314 · en.znaqkj.com

SOURCES · ISO 12480-1 · LOLER 1998 · BS 7121 · EN 14439