Dru ANPR: the gatehouse that reads plates for you.
Take or upload a photo of the vehicle and Dru ANPR reads the plate, tells you whether it belongs to the complex and you decide whether to log the entry or the exit. It works with Colombian cars and motorcycles, in the cloud or installed on your complex’s own computer.

Writing plates by hand is not access control
Notebooks and spreadsheets leave entries unlogged, typing mistakes and no way to know who is still inside. Dru ANPR turns each photo into a reading with its decision, and each entry and exit into a record you can search.
- Belongs or does not belongEach complex registers its units with their contact person and vehicles; when a plate is read, the app says whether it is a resident’s or a visitor’s.
- The guard decidesThe reading suggests the action: log entry, log exit or discard. Nothing is logged without the decision of the person at the gate.
- Each complex, its own spaceMulti-company: every complex has its own units, vehicles, users, plan and data, isolated from the others.
From the photo to the access record
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Colombian plate reading
Detects and reads the plate of cars and motorcycles with an in-house computer-vision engine, with a confidence percentage and several plates per photo.
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Photo, camera or phone
Drag or pick an image (JPEG, PNG, BMP or WebP, up to 15 MB) or use the phone or laptop camera, even live.
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Units and vehicles
Apartments and houses with their contact person and linked vehicles: car, motorcycle or other, with make and color.
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Resident or guest
If the plate belongs to the complex it shows the unit and contact; if not, it lets you admit it as a guest with optional destination unit and note.
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Entries and exits
Logs the entry and closes the exit on the same stay, with manual exit for forgotten ones and an “Inside now” view.
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Reading history
Every detection is kept with its photo, plate crop and the decision taken, with filters by plate, dates, membership and decision.
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Roles and multi-company
The administrator manages units and vehicles; the guard looks up and logs access. Each company sees only its own data.
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Cloud or on site
The same product runs in the multi-company cloud or installed on a computer at the complex, with a signed annual license.
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Light and dark theme
An interface designed for the gatehouse, working on phone, tablet and computer, with light and dark themes.
Four steps at the gate
Capture
The vehicle photo is taken or uploaded from a phone, tablet or computer.
Read
The engine detects the plate, reads it and compares it with the complex’s vehicles.
Decide
The app shows resident or visitor and suggests entry, exit or discard.
Log
The access is saved with who and when, and the reading is kept in the history.
A clear gatehouse, from photo to decision
Real screenshots from a Dru ANPR test environment. Plates and vehicle photos are hidden.
Built to run for real
Designed, developed and deployed end to end by Marandev.
- One product, two modesThe same binary runs in the cloud (multi-company) or on the complex’s computer, where validity comes from a license signed with Ed25519 cryptography.
- Normalized platesPlates are cleaned and validated (5 to 7 characters) and each vehicle is unique per complex, to avoid duplicates.
- Infrastructure as codeThe whole server is provisioned and deployed in a repeatable way, with versions visible in the app.
Coming soon: IP cameras (RTSP), live events and webhooks.
Privacy policy and personal data processing
1. Who we are and what this policy covers
Dru ANPR is a platform that reads vehicle license plates, checks them against the units and vehicles of a residential complex or gatehouse and logs entries and exits. It is operated by Marandev (Maldru), a software developer based in Colombia. This policy explains how personal data is processed in the web panel and in cloud and on-site installations. It is governed by Colombian Law 1581 of 2012, Decree 1377 of 2013 (compiled in Decree 1074 of 2015) and other Colombian personal data protection rules.
2. Roles: controller and processor
Dru ANPR is used by residential complexes, buildings and gatehouses (the “companies”) to control access for their residents and visitors. Therefore:
- Data of residents, visitors and vehicles: the controller is the complex or administration that collects it. Marandev acts as data processor: it processes the data on the complex’s behalf, only to provide the service and following its instructions.
- Data of company accounts and their users (administrators and guards): Marandev is the controller.
If you are a resident or visitor and want to exercise your rights, you can first contact your complex’s administration; you can also write to us and we will handle your request.
3. Data we process
- About the company: legal name, tax ID (NIT), access domain, logo, contracted plan, validity and, in on-site installations, the imported license.
- About panel users: name, username, email when provided to send them access, password (stored in protected form), role and session records.
- About units: type (apartment or house), tower or block, number, and their contact person’s data: name and, optionally, phone, email, ID number and notes.
- About vehicles: plate, type, make, color and notes.
- About readings: the photograph the user uploads or takes (which may show the vehicle, its surroundings and, occasionally, people), the plate crop, the plate read and its confidence, the date, who uploaded it, whether the plate belongs to the complex and the decision taken.
- About accesses: plate, type (resident or guest), destination unit when applicable, entry and exit date and time, who logged it and notes.
- Acceptances: the date and version of the terms and privacy policy accepted by panel users.
- Technical data: IP address and server access logs, used for security, abuse prevention and diagnostics.
Dru ANPR does not perform facial recognition or identify people: it only reads the vehicle’s plate. Each complex decides which resident data it records; it should limit itself to what is needed for access control and avoid writing sensitive data in notes.
4. What we use the data for
- Read plates and determine whether the vehicle belongs to the complex.
- Log and look up entries and exits, and which vehicles are inside the complex.
- Keep the reading history as an audit record.
- Record the acceptance of the terms and privacy policy.
- Manage each company’s accounts, plans, validity and licenses.
- Maintain security, prevent fraud and abuse, and fix faults.
- Comply with legal obligations.
We do not sell personal data or use it for advertising, we do not use it to train models, and we do not share it with third parties other than the providers listed in this policy.
5. Cloud, on-site installation and third parties
Cloud: data is hosted on server infrastructure contracted by Marandev. The plate-reading engine runs on those same servers: photos are not sent to third-party artificial intelligence services. We use an email service to send users their access credentials and no other provider receives resident or visitor data.
On-site installation: when the complex installs Dru ANPR on its own computer, readings, photos, units and accesses are stored in that computer’s database and are not sent to Marandev. The license is a signed file that identifies the company and its validity; it contains no resident data. In that case the complex is responsible for the physical and logical security of the computer and its backups.
6. Cookies and browser storage
Dru ANPR does not use advertising or tracking cookies. It uses browser storage for what is strictly necessary: keeping the panel session and remembering the light or dark theme. If you use the device camera, the browser will ask for permission; images are only sent to the service when you capture or accept a reading. The marandev.co site only stores your theme preference.
7. Retention and deletion
We keep data while the company account exists. Readings and their photos are kept until the administrator deletes them; deleting a reading removes its row and its image files. An administrator can also delete a unit and its vehicles; historical accesses keep the plate and a copy of the unit’s name as a record. If a company is deleted, its data is permanently erased. Server technical logs are kept only as long as needed for security and diagnostics. In the cloud we make periodic backups that are rotated over time; a deleted item may therefore remain in them until then.
When a company’s plan or license expires, access is suspended, but data is not deleted for that reason.
8. Security
We apply reasonable technical and organizational measures: encrypted connections (HTTPS), role-based access control with isolation between companies, passwords stored in protected form, expiring sessions, cryptographically signed licenses and controlled deployments. Images are only delivered to authenticated users of the company. No system is infallible; if we detect an incident affecting your data, we will act and inform you as the law requires.
9. Your rights
As a data subject you may know, update and correct your data, request proof of the authorization, be informed of how your data is used, revoke the authorization or request deletion when applicable, file complaints with the Superintendence of Industry and Commerce (SIC) and access your data free of charge. We answer inquiries and claims within the legal deadlines (10 and 15 business days, respectively).
To exercise them write to hola@marandev.co stating your name, your plate or unit and the complex where your data was recorded.
10. Minors
Dru ANPR is not aimed at people under 18 as panel users. If a photo includes minors, the complex must make sure no more images are captured than needed to read the plate.
11. Changes and contact
We may update this policy; the current version and its date will always be on this page, and we will notify companies when a change is relevant. Contact: hola@marandev.co.
Terms of service
1. Acceptance and scope
These terms govern the use of Dru ANPR, a plate-reading and access-control platform operated by Marandev (Maldru). By creating an account or using the panel you accept these terms and the privacy policy. If you act on behalf of a company, you declare that you have the authority to bind it.
2. The service
Dru ANPR lets a company read plates from photographs, register its units and vehicles, know whether a plate belongs to the complex, log entries and exits of residents and guests and consult the history. It is a support tool: the decision to allow or deny entry always belongs to the person at the gate and to the complex’s administration, and Marandev is not a party to that relationship.
3. Accounts and access
Company accounts are created by Marandev or whoever it authorizes. Panel users must accept these terms and the privacy policy on sign-in, and will be asked again when the version changes. You are responsible for the confidentiality of your credentials, for the activity that occurs with them and for the users you enable. Tell us immediately if you suspect unauthorized access.
4. Plans, validity and licenses
- Each company has a plan priced in Colombian pesos (COP) and a validity period with start and end dates.
- In the cloud, renewal extends the validity for the agreed period. In on-site installations, validity is defined by a signed license issued by Marandev and imported into the application; it may be tied to a specific computer.
- When validity ends there is a grace period with a notice (7 days by default). After that period access is limited until renewal. Your data is kept and everything is restored on renewal.
- In on-site installations, if the computer’s clock is set back abnormally, the license is treated as expired until the date is corrected.
- Prices and commercial terms are agreed with Marandev. Unless otherwise stated, payments for periods already started are non-refundable.
5. Acceptable use
You may not use Dru ANPR for illegal or fraudulent activities, to surveil or harass people, to capture images in violation of the law, to try to access other companies’ data, to compromise or overload the platform (including automated attacks) or to store unlawful content. We may limit or suspend use that puts the service or third parties at risk.
6. Resident and visitor data
You are responsible for the personal data of the residents, visitors and vehicles you register: you must inform them of the processing, obtain their authorization where the law requires it (for example in the house rules or the gatehouse notice) and handle their requests, in accordance with Colombian law. Marandev processes it as processor, under the privacy policy. You must display visible notices that images are captured at the entrance. You define the content you register: you are responsible for its lawfulness and accuracy.
7. Reading accuracy
Plate reading is done with artificial intelligence models and may contain errors, especially with dirty, damaged, glare-affected, out-of-focus or barely visible plates. Each reading shows its confidence percentage and must be reviewed by a person before an access is logged. Marandev does not guarantee that a plate will be read or validated correctly in every case.
8. Availability and support
We work to keep the service continuously available, but it is provided “as is”, with no guarantee of uninterrupted or error-free operation. We may perform maintenance and updates, trying to give notice in advance when they affect use. In on-site installations, the complex is responsible for the computer, its power and network connection, and its backups. Support is provided by email at hola@marandev.co.
9. Intellectual property
The software, models, design, trademarks and documentation of Dru ANPR belong to Marandev. You are granted a limited, non-exclusive, non-transferable right of use while your plan or license is valid. You keep ownership of your data, photos and logo, and you authorize us to process them only to provide you the service. You may not copy, decompile or redistribute the software or its models.
10. Limitation of liability
To the extent permitted by law, Marandev is not liable for lost profit, losses arising from access that was allowed or denied, indirect damages, or for acts of third parties, force majeure or misuse of the platform. Where liability exists, it will be limited to the amount paid for the service in the three months before the event. Nothing above limits rights that the law does not allow to be limited.
11. Suspension and termination
You may stop using the service at any time and ask us to delete your company and its data. We may suspend or terminate an account for breach of these terms, non-payment or risk to the platform, giving notice when reasonable. On termination, data is handled as set out in the privacy policy.
12. Changes, governing law and contact
We may modify these terms; the current version and its date will always be on this page, and substantial changes will be notified to companies. Continuing to use the service after a change means accepting it. These terms are governed by the laws of the Republic of Colombia and disputes will be submitted to the competent courts of Colombia. Contact: hola@marandev.co.