Table of Contents
• Introduction
• What is LRTK 360 Construction Records?
• Benefit 1: Aggregate Site Data with Centralized Information Management
• Benefit 2: Prevent Mistakes with High-Precision Position Recording
• Benefit 3: Intuitive Site Understanding with 360° Photos + Point Cloud Data
• Benefit 4: Immediate Sharing and Remote Supervision via Cloud Sync
• Benefit 5: Improve Efficiency with Fixed-Point Monitoring and Automated Reports
• Introduction to Simple Surveying with LRTK
• Frequently Asked Questions
Introduction
Construction site construction records are indispensable for ensuring quality and preventing problems. But for site supervisors, aren’t the daily record-keeping tasks a major burden? Traditional methods—taking construction photos and pasting them into ledgers, leaving handwritten notes on paper reports, and later reorganizing data at the office—create a mountain of inefficient work. Human errors such as forgetting to take photos or missing records can cause trouble during later verification or reporting. Also, information collected on site is often stored separately by each person in charge, meaning the latest progress cannot be shared among all stakeholders. This kind of person-dependent, analog approach to construction records becomes increasingly problematic as projects grow larger, leading to decreased productivity and more mistakes.
Now gaining attention as the trump card to solve these issues is the site DX tool that digitizes field records using smartphones: LRTK 360 Construction Records. By enabling centralized management and cloud sharing, this solution substantially changes how construction records are handled, directly reducing the burden on site supervisors and improving operational efficiency. In this article we explain what LRTK 360 Construction Records is and detail the five benefits you gain by adopting it.
What is LRTK 360 Construction Records? A DX tool that records sites with high-precision positioning × 360° photos
“LRTK 360 Construction Records” is a state-of-the-art digital tool that combines a compact high-precision GNSS receiver (RTK unit) attached to a smartphone with a 360-degree camera to accurately and efficiently record site conditions. LRTK (Real Time Kinematic) technology enables centimeter-level positioning (cm level accuracy (half-inch accuracy)) with a smartphone, appending high-precision position coordinates and orientation information to every captured 360° site photo. Positioning tasks and writing coordinate notes on photos that used to rely on manual work are automatically recorded simply by taking photos with LRTK, so there is no extra hassle. Acquired data can be uploaded to the cloud on the spot and shared in real time with the office or remote stakeholders.
LRTK 360 integrates with various sensors built into smartphones to offer a range of functions. For example, it can work with a phone’s LiDAR scanner to scan the surroundings and obtain high-density 3D point cloud data, and it includes an AR display function that overlays design models onto camera images. Leveraging these features makes LRTK a versatile site DX tool capable of intuitively handling everything from surveying to checking construction status with a single device. Operation is simple: attach the dedicated unit (approx. 125g) to your smartphone and launch the app. No complicated settings are required, so any field staff can start using it immediately. In short, LRTK 360 Construction Records is a revolutionary solution that completes the formerly cumbersome site recording and measurement tasks with a single smartphone, creating an environment where anyone can easily and reliably record the site.
Benefit 1: Aggregate Site Data with Centralized Information Management
One of the biggest advantages of implementing LRTK 360 Construction Records is that it allows you to centrally manage all kinds of site information. Drawings, construction photos, notes, measurement data… these items, which were traditionally managed as separate files or ledgers by each person in charge, are consolidated on LRTK’s cloud platform. Data entered or photographed from a smartphone on site is immediately stored in the cloud, and all stakeholders can access the same up-to-date information. For example, centralizing construction photos and progress reports in the cloud eliminates confusion like “Which is the latest document?” or “The site and headquarters have conflicting reports.” With information unified, you won’t waste time searching for necessary records. Past meeting notes and inspection results can also be searched and viewed from the field, so you can quickly find the information you need, greatly speeding up decision-making.
Moreover, because construction records are accumulated in the cloud, project-wide history management becomes easy. You can review construction progress history and past corrections later, which strengthens long-term quality control and audit responses. Paper-based management carried risks of lost files and data-entry mistakes, but digital centralized management significantly reduces such human errors. Centralizing information removes the gap between the site and the office, allowing site supervisors to spend more time on process management and safety management—the tasks they should prioritize.
Benefit 2: Prevent Mistakes with High-Precision Position Recording
LRTK 360 Construction Records also excels at clearly recording “what was done where” through centimeter-level high-precision positioning. Typical smartphone photos have GPS errors on the order of several meters, making it hard to pinpoint exact locations later. With LRTK, however, you can automatically record the coordinates of the shooting point with horizontal and vertical accuracies of several centimeters (several cm (several in)). For example, buried pipe positions or concrete placement locations can be precisely positioned and digitally recorded on the spot. Position information is tagged to the photographed image data, so it’s immediately obvious on a map “which site location this photo shows.” This reduces the need to write descriptions for each photo when creating reports and facilitates the smooth creation of accurate, error-free records.
High-precision position recording directly contributes to preventing rework and improving safety measures. Detecting discrepancies between design positions and actual construction positions on the spot can prevent later problems such as “that equipment was installed in the wrong place.” LRTK’s value is also evident in disasters: for example, immediately after an earthquake, rapidly measuring and recording the positions of collapsed structures with LRTK allows recovery teams to head to the correct locations. Even when networks are disrupted, LRTK, which supports augmentation signals from Japan’s Quasi-Zenith Satellite System (Michibiki), can continue positioning, so you can record accurate position data even at isolated sites. The confidence of being able to record positions with centimeter accuracy is a major reassurance for site supervisors. Because small oversights on site can lead to serious accidents, accurate, mistake-free construction records are crucial. LRTK 360 dramatically increases the reliability of site records with its precision and brings the incidence of "missing records" or "location identification errors" close to zero.
Benefit 3: Intuitive Site Understanding with 360° Photos + Point Cloud Data
With traditional 2D photos and text-only records, it can be hard to recall site details as time passes. LRTK 360 Construction Records lets you record the entire site with 360° photos and 3D point cloud data, so you can later grasp the situation as if you were there. 360° camera images capture the surroundings comprehensively and are ideal for recording confined spaces or complex structures. For example, rebar arrangement before concrete pouring or the state of installed equipment—situations where taking photos from all sides is difficult—can be recorded from every direction with a single 360° image. This prevents missed shots like “we don’t have a photo of that part” and improves the completeness of construction records.
Furthermore, overlaying the high-density point cloud data obtained with LRTK (laser-scan 3D measurement data) onto 360° photos enables accurate visualization of site shapes. Areas that appear flat in photos can be intuitively understood in terms of dimensions and forms by combining the point cloud’s 3D information. For example, comparing point clouds of terrain or structures before and after concrete pouring makes it easy to spot differences in as-built conditions, and you can measure distances, areas, and volumes on the spot from the acquired point cloud. Such visually rich records make it easy for third parties unfamiliar with the site to understand the situation and are effective as explanatory materials for clients and subcontractors. LRTK 360 Construction Records allows you to digitally archive the entire site, achieving a level of “site visualization” that paper photo albums could not provide. This is a DX-specific benefit and a key point that powerfully supports site supervisors’ tasks of “recording and conveying.”
Benefit 4: Immediate Sharing and Remote Supervision via Cloud Sync
Real-time sharing of records collected on site is another major advantage of LRTK 360 Construction Records. Photos and notes taken on a smartphone can be synced to the cloud with a single tap, allowing distant offices and stakeholders to view the data immediately. You no longer need to return from the site carrying a USB stick with photos or attach files to emails. When information is updated in the cloud, all stakeholders can track the latest situation, enabling integrated management that removes the sense of distance between the site and remote locations. For instance, if an unexpected issue arises on site, its photos and descriptions are quickly uploaded to the cloud, allowing headquarters staff to promptly grasp the situation and issue instructions. Daily progress reports can be shared continuously in the cloud instead of submitting paper reports at weekly meetings, enabling early detection of delays or defects and timely countermeasures.
Real-time sharing not only improves efficiency but also enhances construction management accuracy. Because clients and senior management can verify on-site happenings step by step, project transparency increases and helps build trust. For companies with remote sites, being able to monitor progress from the office without business trips reduces travel time and costs. With LRTK 360, you can even share AR imagery from the site on a tablet during meetings, making it easier to explain complex situations accurately. Cloud sync for immediate sharing creates a system in which the boundaries between site and office are removed and the whole team shares the same information at all times. As a result, miscommunications and missed confirmations are reduced, and responses to problems become faster. Now that sites can be “visualized” remotely, the burden need not fall solely on a single site supervisor—your organization can support the site as a whole.
Benefit 5: Improve Efficiency with Fixed-Point Monitoring and Automated Reports
LRTK 360 Construction Records includes features that greatly streamline the administrative work of site supervisors. Representative examples are the fixed-point monitoring function, which lets you compare records from the same location over time, and the automated report function, which generates reports from recorded data with one click. When photo data is uploaded to the LRTK cloud, photos are organized on a map by shooting position and displayed in chronological order. This allows you to check photos taken repeatedly at the same location in a way that clearly shows changes over time. For instance, if you take fixed-point photos of key areas from foundation work through completion, you can smoothly review progress and finished quality later. Comparing past photos with current conditions makes it simple to check finishes or verify that problematic areas have been corrected. Tasks that previously required locating and lining up large numbers of photo files for visual comparison can be done with one touch on LRTK. This visualization of progress helps site supervisors accurately grasp daily changes and improves the precision of reporting and as-built management.
Another advantage is the ability to automatically generate various report forms from recorded data. The LRTK cloud can drop photos, position information, and notes into prescribed formats and instantly output PDF reports. When creating inspection records or as-built inspection reports, selecting the captured data and pressing a button completes documents in the required formats. Because you don’t need to manually paste photos or transcribe text, time spent creating reports is drastically reduced. A large volume of documents is typically created at project completion, but with LRTK the connection between field records and report generation is seamless, making the reduction in administrative burden immeasurable. Digitizing report forms also advances paperless workflows, reducing the effort and cost of storing and mailing materials. With these features, site supervisors are freed from tedious desk work and can focus on higher-value tasks. LRTK 360 Construction Records is a reliable ally that streamlines operations from the front lines to office work.
Introduction to Simple Surveying with LRTK
So far we have examined the benefits in the field of construction records, but LRTK is also very useful as a tool that enables “simple surveying” on site. The combination of RTK technology at the core of LRTK 360 Construction Records and the smartphone app allows site staff to perform surveying tasks without specialized equipment. For example, the LRTK app offers a one-button function to record coordinates of reference points, and a coordinate navigation function that guides you to specified coordinates using on-screen guidance. In addition, terrain data obtained via the iPhone’s LiDAR point cloud scan function can be used to automatically calculate volumes of embankments or excavations. Utilizing these functions means tasks that used to require a dedicated surveying team can now be completed quickly by site personnel alone. There are increasing cases where a single person conducts wide-area surveying with LRTK and immediately shares the acquired data to the cloud for stakeholder coordination. Being able to perform simple surveying on site is a major strength for operating with limited staff and supports the speed and efficiency demanded in the DX era. In addition to streamlining construction records, LRTK’s ability to handle surveying makes it an innovative tool that comprehensively boosts on-site productivity.
Frequently Asked Questions
Q1. What equipment and preparations are needed for implementation? A. To use LRTK 360 Construction Records, prepare the dedicated compact RTK receiver, a 360° camera, and a compatible smartphone (iPhone recommended at present). The RTK receiver is attached to the smartphone and, after configuring the correction information reception settings, centimeter-accuracy positioning is possible. Install the dedicated app and you can start using all functions—photo capture, point cloud scanning, cloud sync, and more. There is no need to acquire special surveying equipment or large cameras; the solution can be deployed with a smartphone-centered, simple configuration.
Q2. Can on-site staff who are not good with IT use it? A. Yes. The interface is designed to be intuitive and simple to operate. You can start positioning or take photos by pressing app buttons, and complex settings and calculations are automated. For example, coordinates are automatically recorded when you take a photo, and the “sync” button uploads data to the cloud. If users are uneasy about operation, basic training will quickly bring them up to speed. The UI has been refined based on field feedback, so it is designed for easy use by everyone from veterans to newcomers.
Q3. Can it be used even when there is no internet connection on site? A. Yes. The positioning and recording functions of LRTK 360 Construction Records operate properly even without internet connectivity. Cloud sync can be performed after moving to an area with signal, so you can collect data in remote mountain areas and upload it later. For positioning, LRTK supports Japan’s satellite augmentation service CLAS from Michibiki, so centimeter accuracy can be maintained even when cellular service is unavailable. In other words, the system is designed so you can continue recording offline and integrate the data into centralized management later.
Q4. Is storage and sharing of acquired data secure? A. The LRTK cloud is designed with security in mind. Uploaded site data is encrypted and stored on secure cloud servers. Access rights can be managed so that only project stakeholders can view records. Because cloud backups exist, you don’t need to worry about data loss due to device loss or failure. Compared to managing only paper ledgers or local PCs, you achieve more reliable data storage. Operational settings can be aligned with your internal information security policies, so you can use the system with confidence.
Q5. What kinds of tasks can LRTK be used for? A. LRTK has a wide range of applications. In addition to the construction records and simple surveying discussed in this article, it is useful for as-built management, equipment inspections, and infrastructure maintenance, among many other scenarios. For example, by consistently capturing and sharing position-tagged data from pre-construction surveys, through construction progress, and into post-completion periodic inspections, you can drive DX across the entire project lifecycle. It can also be used in combination with data from drones and other surveying instruments. LRTK is designed as a flexible platform to meet site needs and will be a reliable partner for “digitizing the entire site.”
Next Steps:
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LRTK helps professionals capture absolute coordinates, create georeferenced point clouds, and streamline surveying and construction workflows. Explore the products below, or contact us for a demo, pricing, or implementation support.
LRTK supercharges field accuracy and efficiency
The LRTK series delivers high-precision GNSS positioning for construction, civil engineering, and surveying, enabling significant reductions in work time and major gains in productivity. It makes it easy to handle everything from design surveys and point-cloud scanning to AR, 3D construction, as-built management, and infrastructure inspection.

