3.1.1 Meissa Guard

✅ Meissa Guard is a service that makes construction sites safer and easier to manage for both workers and managers. It uses Meissa platform's orthophotos, hazard zone information, and personal location information from mobile phones' GPS to provide workers with a safe working environment and managers with a convenient way to manage workers.

Why is Meissa Guard needed?

For workers:

- Workers can easily see their current location and the construction site they are working at.

- Workers can share their location with safety managers to prepare for dangerous situations.

- Workers can receive alerts when they enter danger zones.

For managers:

- Managers can easily see the locations of workers who have installed the app on the platform's web.

- Managers can manage the locations of workers and check their contact information in case of an emergency.

- Managers can monitor danger zones and situations, and use the data to investigate accidents.

Guide for Workers

1. Meissa Guard Application Download

Meissa Guard App is a location-based safety management application service for workers in construction sites. It can be downloaded from Android OS (Google Play Store) and iOS (iPhone App Store).

(1) Download after scanning QR code

1. Open the camera on your mobile phone and scan the QR code provided by the manager.

a. If Meissa Guard is not installed on your phone, automatically navigate to the store.

b. If the Meissa Guard is installed on your phone, the Meissa Guard app runs.

2. Go to the URL that connects you and install the app.

ℹ️ If the camera does not recognize the QR code, download it in the method (2) below.

(2) Download by searching after launching the store

App icon of Meissa Guard 

📱 <For Android>

1. Click the [Play Store] on your mobile phone to launch it.
2. Search for Meissa Guard in the search bar at the top.
3. Find the image that is the same as the app icon above and click it to download.

📱 <For iPhone>

1. Click the [App Store] on your mobile phone to launch it.
2. Click [Search] at the bottom to go to the search tab.
3. Search for Meissa Guard in the search bar at the top.
4. Find the image that is the same as the app icon above and click it to download.

2. How to use the app

2-1. QR check-in

1. Click the [Check-in with QR] button.

2. Click [Allow only while using the app].

❓I clicked [Don't allow] ...!

• If you clicked "Don't allow", please follow the steps below to allow camera permission and then restart the Meissa Guard app.

Click [Settings]

Click [Permissions]

Click [Camera]

Click [Allow only while using the app]

3. Scan the project QR code so that it is within the square box.

ℹ️ Project QR codes can be obtained from the site manager.

2-2. Sign up

1. Enter your name and phone number, then click the [Next] button.	2. Select whether you are a vulnerable worker, then click the [Next] button.
3. Agree to the terms and conditions, then click the [Agree and Complete] button.	4. Confirm your name and project, then click the [Next] button.
5. Review permissions, then click the [Confirm] button.	6. Click the [While using the app] button.
❓[Approximate location] clicked..! If you clicked [Approximate location], please follow the steps below to enable accurate location permissions and then restart the app. Click [Go to settings] Click [Permissions] Click [Location] Toggle [Use accurate location] on	❓[Permission denied] clicked..! If you clicked [Deny], please follow the steps below to enable location permissions and then restart the Meissa Guard app. Click [Go to settings] Click [Permissions] Click [Location] Click [Always allow]

7. Read the permission guide and click the [OK] button.

ℹ️ Permission guide

• Location: (Required) This permission is required to check and share my location.
• Notification: (Optional) This permission is required to receive push notifications and be aware of entering a dangerous area.

Review permissions, then click [Confirm]

2-3. GPS check-in

1. Click the [Check-in with GPS] button and wait for GPS verification for a moment.

2. After checking your name and project, click the [Check in] button. ℹ️ You must have a history of checking in with a QR code in order to check in with GPS.

 

2-4. Service Introduction

[Home: Menu]

ℹ️ Button guidance You can change the map format behind the orthophoto of the site. You can zoom in and out. Move the map around my site. Move the map around my location.

 

[Home: Hazard Zone]

ℹ️ Hazard zone guidance If your administrator has specified a danger zone on the web, you can also see the scope and name of the danger zone in the app. If your current location is located in a dangerous area, you can receive a notification through the app Push.

ℹ️ Hazard Zone Details Tap the Hazardous Zone area for brief information in the bottom sheet. Click to read more to control the full content and notifications of the danger zone.

ℹ️ Hazardous Zone Notification If you enter a dangerous area, you will receive a warning notification within one minute. For Android OS, it can be guided by sound with or without (silence/vibration) for strong alerts. [Turning off the notification for 5 minutes] = You will not receive a notification for five minutes in the same danger zone. [Turning off the notification for today] = You will not be notified until you log out of the same danger zone.

 

[Hazardous Zone]

ℹ️ Managing Hazardous Zone Notifications You can view the full list of risk zones in operation. When toggle off, you can turn off [turn off notifications for today's zone]. Click to read more to see the full details of the danger zone.

 

[My Site]

ℹ️ Toggle guide during work You can click on the right toggle to notify the administrator whether (in-work / out-of-work). If you turn off the toggle while working, Location collection stops. You can't go to my location even if you click [My Location]. Unable to receive danger zone entry notification. It may be considered a work stoppage and may be disadvantageous to your work.

[My information]

ℹ️ Menu Guide You can check the information you wrote when you signed up. You can check the terms and conditions again. You can log out (leave). If you log out (leave), Location sharing is interrupted for the administrator. To check-in, you need to re-scan your project QR or GPS check-in.

 

Guide for Managers

If you are using the Meissa platform, you will be provided with one project QR code per project.

1. Download Project QR

On the home screen (project list), click the (⚙️Settings) button in the lower right corner of the project you want to use Meissa Guard service.

Project List

Click the ‘Project information’ menu to enter.

Project Information

Click the [QR download] button in the lower left corner.
QR Download

• Show the QR code that pops up to the labor worker who is joining the Meissa Guard app.
  
  ℹ️ You can download it in JPG format by clicking the [Download JPG file] button in the lower right corner.

2. Real-time worker location confirmation

2-1. Real-time

If there is a user who has successfully joined the Meissa Guard app by scanning the project QR code, you can check the location information of the worker on the site situation detail page.

1. Please check the 'Worker Location' check box on the left side bar.
2. Make sure the workers on the map appear.

1. If you are curious about the exact location information of a specific user, click the [Labor Location Details] button at the bottom.
2. In the list on the right, click on the name of the person whose information you want to check.
3. The map moves to the exact location of the user who clicked to see what the worker entered when signing up (name, mobile number, last location sharing time).

2-2. History of previous locations

If you have a worker who checked in on a date earlier than today, you can view the past location in [History of Previous Location].

1. Tap [Record previous location] on the right in the list of workers.
2. Check the slide bar at the bottom of the map.

Slide bar

ℹ️ [Slide bar] usage guide

1. Date selection: Select the desired date.
2. Play selection: You can move forward or backward 10 seconds, pause or play time.
   • The default playback speed is 10 seconds per second.
3. Time zone selection: You can select from 0 to 24 hours.

3. Hazardous Areas

3-1. Add Hazardous Areas

You can add a designated area where you want to control access or where dangerous work is expected. (Same creation method as area tool)

Add and create hazard area

① Turn on the "Hazard area" checkbox in the left sidebar.

② Click the [Add hazard area] button at the bottom.

③ Use the left or right mouse button to designate the hazard area on the map.

Enter hazard area information

ℹ️ [Hazard area] content entry guide

• Name: You can specify the name of the hazard area yourself.
• Description: You can enter a specific description of the hazard area.
• Start date: You can specify the time when access to the area is controlled or dangerous work begins.
• End date: You can specify the time when access to the area is controlled or dangerous work ends.
• Coordinates: Displays the coordinate information of the corner point of the hazard area.

⚠️ [Hazard area] content entry precautions

• The date of the hazard area must be specified in order to save it normally.
• It is possible to create/save hazard areas in the past or future, but they may not be displayed on the map due to policy.
• The hazard area will be displayed on the map automatically when the start date is reached, and it will disappear automatically from the map when the end date is reached.

3-2. Hazardous Zone History

You can view the creation/expiration history of hazardous areas and the history of workers entering/exiting them. Hazardous Zone - Hazardous Zone History

1. Click 'History of Hazardous Zones' on the left.
2. On the screen on the right, select the one you want to see (date/danger zone name/state).

ℹ️ Information

• Date: You can check by selecting on a daily basis.
• Select Hazardous Zone: You can select all or only the desired hazard zone to view.
  
  • Status : You can check by selecting only the desired status.
  • Dangers: Time when a worker enters a dangerous area
  • Safety: Time when the worker left the danger zone
  • Creation/Expiration: Time of creation/expiration of dangerous zones

3-3. View previous hazard areas together

You can view the past location of workers and the past hazard areas that existed together.

Worker location - Previous location record - View previous hazard areas together

① Turn on the ‘Worker location’ checkbox on the left.

② Click the "Previous location record" tab in the right menu.

③ Turn on the "View previous hazard areas together" toggle in the right menu. (default enabled)

ℹ️ Information

• When viewing "Previous location record", the real-time hazard area is automatically turned off.
• The function of checking only the previous hazard areas without the worker location is not provided.

FAQ

Guide for Workers

Before Installation

Why should I use the Meissa Guard? What's good about using it?

• You can see at a glance the site where I work and where I am located.
• I can share my location with my safety manager to prepare for dangerous situations.
• You can check the danger zone and receive a notification when you are located in the danger zone.

Where can I get the Meissa Guard app?

You can get it from the Android = Google Play Store / iOS = App Store.

Does Meissa Guard only support Android and iOS devices? (Can it only be used on smartphones?)

Yes, currently Meissa Guard is only available on two operating systems and does not support 2G phones.

I have a smartphone, but it's old. Is it available?

The version of the operating system is important regardless of when you purchased your smartphone. Meissa Guard supports Android version 9.0 or later and iOS version 12 or later. Please update your phone's OS to the latest version by going to the phone's settings menu.

After Installation - Sign Up

[QR Check In] What should I do?

A site-specific QR code scan is required to identify which site the worker is working in. Please request the QR code of the site to the person in charge of safety management.

[GPS check-in] What is that? (GPS check-in doesn't work)

If there is a site where you last checked in QR, you can check in without QR just by being located inside the site. Please allow access to location information to the Misa Guard app and hold your phone still without turning off the screen.

• If you don't have a previously checked-in site or if you can't identify the location, use QR check-in.

Can I sign up by any other means other than the QR code?

Membership registration is only possible through QR code scanning.

Do I have to enter my name and phone number?

No, you are not required to enter accurate information, but you must enter some information. Since this is a safety management service, please enter your real name or contact information that can be actually connected for quick contact and identification in case of emergency.

Do I have to agree to the terms of service?

Yes, you must agree to the terms of service to use the service.

Why do I have to allow location "Always"?

This is to collect your location even when the app is not running (when the screen is turned off or minimized). Even if you allow location "Always", you can rest assured that your location will not be collected after you log out.

I accidentally turned off the location permission [always allow] page, can't I get it to come out again?

If you completely shut down the app and run it again, we will provide a guide for you to set it up again.

I accidentally turned off location permissions [correct location] and can't I get them to come back out?

If you completely shut down the app and run it again, we will provide a guide for you to set it up again.

After installation - location sharing

Does the app record my location 24/7? (Does it keep recording my location even after I leave work?)

No. Your location information will not be collected if you log out or mark yourself as "Not working" regardless of whether you have installed the app or allowed location.

How to stop sharing your location?

1. Go to "My site" and turn off the "Working" toggle.
2. Go to "My information" and tap "Log out".

There are two ways to stop sharing your location.

But, if you stop sharing your location, the manager may hold you responsible for safety issues or consider it as a violation of work.

How to handle when I am not working or leaving work?

1. To temporarily stop sharing your location for a few minutes or hours, go to "My site" and turn off the "Working" toggle.
2. To leave work, go to "My information" and tap "Log out".

Do I have to log out every time I don't want to share my location?

No. The app will automatically log you out if you have not logged out within the following time limits:

1. 12 hours after the initial check-in
2. 8 hours after the last location update
3. 5km away from the center of the site

Why did I get logged out even though I didn't do anything? (Do I have to scan the QR code every day?)

The app will automatically log you out to protect your personal information if you have not logged out within the following time limits:

1. 12 hours after the initial check-in
2. 8 hours after the last location update
3. 5 km away from the center of the site

Please scan the QR code or check in with your GPS the next day when you come to work.

After Installation - Hazardous Zone Notification

Can't I change the hazard zone alert to vibration or silent?

The hazard zone alert must be notified by sound.

This is a decision for a safer construction site and workers. We ask for your understanding.

Can the hazard zone entry alert be delayed?

Currently, the alert may be delayed by up to 5 minute.

• If the alert is not received at all, please check if notification permission is enabled for the Meissa Guard app.
• If notification permission is enabled and the alert is still not received, please contact the Meissa sales team.

Common Guide

Is the location recorded even in underground or construction sites with unstable signals?

The location information is collected by receiving the location information collected through the GPS of the phone through the network. Therefore, the location collection may not be accurate in places where the GPS signal is weak or the network is unstable.

What is the location accuracy?

The location information is obtained from the GPS of the phone, so it is difficult to determine the accuracy as it varies depending on the environment. However, it is known that the error range is within 5 meters in outdoor areas.

Personal information and location data are used where and how?

The purpose of collecting personal information and location data is to share the location of workers with site managers and detect hazards.

How long is the time interval when the location is recorded?

Basically, if you move more than 5m, it will be recorded based on distance.
If you move after stopping for more than 30 minutes in a place within 5 meters, the next location record may take a long time.

Personal information and location data are used where and how?

The purpose of collecting personal information and location data is to share the location of workers with site managers and detect hazards.

How long are personal information and location data stored?

Based on Article 16, Paragraph 2 of the Act on the Protection and Use of Location Information, we automatically record and preserve records of personal location information collection, use, and provision, and the contents are stored for one year after the end of the platform usage contract period.

Won't battery consumption be severe?

Based on the daily battery usage, it can consume about 10% to 20% of the total battery usage.

How much data is used?

Based on 8 hours of use per day, it uses about 10MB to 20MB.

Can team members share their location?

Workers using the Meissa Guard app can only see their own location.

Managers using the platform Web can see the location of all workers.

Is support not available in languages other than English?

As of this point, it is supported in Korean and English.

Other languages are not currently scheduled for development, but please request if needed.

Guide for Manager

Why should I use the Meissa Guard? What's good about using it?

• You can check the location information of the workers who installed the app on the platform web at a glance.
• You can manage the location of workers and check their contacts in case of emergency.
• Dangerous sections and situations can be controlled and used to investigate accidents.

Where can I get the project URL/ QR code?

You can access the platform and download it by clicking the [QR download] button at the bottom of the [Project Settings] menu.

How can I see the location of a worker?

After logging in to the platform, you can check it by turning on the [worker's location] menu on the field detailed screen.

How can I see the construction vehicle locations?

After logging in to the platform, you can check it by turning on the [construction vehicle locations] menu on the field detailed screen.

Can't I see the location of the past instead of the real-time position of the worker?

You can view in the [Previous Location History] tab.

I created a danger zone, but it disappeared.

For dangerous areas, you must press the [Save] button to save the value. Press the [Save] button on the left menu.

Can't you designate a hazard zone in the past or future?

Yes, it is possible. However, past or future hazard zones are displayed as follows according to policy.

• Before start: Side bar = Displayed in the list (O) / Map = Not displayed (X)
• In progress: Side bar = Displayed in the list (O) / Map = Displayed (O)
• After end: Side bar = Not displayed in the list (X) / Map = Not displayed in the map (X)

 

Can't we see the past workers' locations and danger zones together?

It is possible. Turn on the 'View previous hazardous areas together' toggle on the 'Labour Location - Record previous location' tab on the platform to view both the hazardous areas and the workers' locations that existed in the past.

• It does not provide the function to only see the past dangerous areas.