How do you grant external technicians temporary access?

Granting external technicians temporary access is done by using time-based access rights that automatically expire after the scheduled work. The key lies in combining the right technical resources with clear procedures: who gets access, to which zones, and for how long. In this article, we answer the most frequently asked questions about temporary access for technicians, from risks to the best systems. For immediate questions, you can always contact with Sellox.

What are the risks associated with unsupervised access for technicians?

Unsupervised access for remote technicians poses significant security risks. Without supervision or a time limit, technicians can gain access to areas irrelevant to their work, there is no record of who was present when, and there is a risk of theft, data loss, or sabotage. Good access control is therefore essential.

The risks are concrete and diverse. First, there is the problem of uncontrolled movement within the premises: a technician who can move around freely can knowingly or unknowingly gain access to server rooms, archives, or other sensitive locations. Second, a reliable logbook is often lacking with unsupervised access, making it impossible to determine exactly what happened afterwards.

In addition, there is the risk of forgotten or unrevoked access rights. If a technician still has access after completing their work, a security vulnerability persists that sometimes remains undetected for weeks or months. This applies to both physical keys and digital access codes or badges.

What methods exist for temporary access?

There are several methods for granting external technicians temporary access, each with its own advantages and disadvantages. The most commonly used options are temporary access codes, one-time badges, digital keys via an app, and guided access, where an employee accompanies the technician. The best choice depends on the security requirements and the nature of the work.

Temporary codes and badges

Temporary PIN codes or one-time access codes are easy to set up and deactivate. You program a code that is only valid on a specific day or time window. One-time badges work in a similar way: they are issued upon arrival and collected upon departure, and are linked to a specific access profile.

Digital and app-based access

Modern access systems offer the ability to send temporary digital keys via a smartphone app. The technician receives a time-limited credential on their phone and can use it to open specific doors. This type of access is easy to revoke, fully logged, and managed remotely, without the need for a physical key or badge.

How do you set time-based access rights?

You configure time-based access rights via the control panel of your access control system. You create a temporary user profile, link it to the relevant doors or zones, and set a start and end time, after which the rights automatically expire. This requires a digital access control system that supports time profiling.

The steps are generally as follows:

1. Create a new user profile for the technician, linked to his name and job number.
2. Select only the doors or zones that are relevant to the planned work.
3. Set a validity window: for example, from Monday 08:00 to Monday 17:00.
4. Link the profile to a temporary badge, code, or digital key.
5. Send the access information securely to the technician, preferably via a secure channel.

Always ensure that the system automatically revokes rights after the set time has expired. Manual revocation is error-prone and is too often forgotten.

What do you need to record when granting temporary access?

When granting temporary access to external technicians, you must record at least: the identity of the technician, the company for which he works, the date and duration of the access, the specific zones to which access was granted, and the name of the internal person responsible who approved the access. This record-keeping is important for both security and compliance.

A complete file also contains the reason for the work and a reference to the underlying assignment or maintenance contract. This makes it possible to quickly reconstruct who was present at what time and for what purpose in the event of an incident or audit.

Many modern access control systems automatically record this in an audit log. Therefore, ensure that this log is checked regularly and retained for a sufficient period, in accordance with applicable privacy legislation.

How do you revoke access after the work is completed?

You revoke access by deactivating or deleting the temporary user profile in the access control system, collecting the issued badge upon departure, and verifying that the time-based rights have actually expired. In systems with an automatic expiration date, revocation occurs automatically, but a manual check remains advisable.

The best procedure is a fixed checklist for concluding a visit:

• Collect badge or temporary key at the reception or desk.
• Check in the system if the profile is deactivated.
• Immediately invalidate any temporary codes, even if they have not yet been used.
• Add a concluding note to the visit file.

With systems that work with app-based digital keys, you revoke access via the control panel. The technician then immediately loses all access, regardless of whether the set end time has already been reached.

Which system is best suited for temporary access for technicians?

The most suitable system for temporary access for technicians is a digital access control system with time profiling, central management capabilities, and automatic logging. Systems that work with app-based credentials or temporary PINs offer the most flexibility and the lowest risk of human error when revoking access.

The following criteria are decisive when choosing a system:

• Time profiling: The system must support time-based rights that expire automatically.
• Zone management: You must be able to set per technician which doors or rooms he has access to.
• Audit log: All access times are automatically recorded.
• Central management: Access must be able to be granted and revoked remotely.
• Integration: The system preferably works in conjunction with your existing security or building management infrastructure.

For smaller premises, a standalone system with temporary codes may suffice. For larger locations or organizations with many external visitors, a fully digital platform with a central management environment is the most robust solution. Would you like to know which system best suits your situation? Contact us with Sellox for personal advice.