{"id":7454,"date":"2026-08-15T08:00:00","date_gmt":"2026-08-15T06:00:00","guid":{"rendered":"https:\/\/www.sellox.nl\/?p=7454"},"modified":"2026-08-10T14:51:22","modified_gmt":"2026-08-10T12:51:22","slug":"how-do-you-prove-who-had-access-to-a-room","status":"publish","type":"post","link":"https:\/\/www.sellox.nl\/en\/hoe-bewijs-je-wie-toegang-heeft-gehad-tot-een-ruimte\/","title":{"rendered":"How do you prove who had access to a room?"},"content":{"rendered":"<p>Prove who had access to a room by using electronic access control, camera footage, logbooks, or witness statements. The most reliable method combines multiple sources: a digital <a href=\"https:\/\/www.sellox.nl\/en\/access-control\/\">access control system<\/a> automatically records who opened a door and when, while camera surveillance provides visual confirmation. Do you want to know which approach best suits your situation, <a href=\"https:\/\/www.sellox.nl\/en\/contact\/\">then feel free to contact us<\/a> with Sellox. In this article, we answer the most frequently asked questions about proof of access.<\/p>\n<h2>Which systems automatically register who enters a room?<\/h2>\n<p>Electronic access control systems automatically record who enters a room using badges, key cards, PIN readers, or biometric scanners. Each use is captured in a time-stamped log file containing the user&#039;s identity, the time, and the relevant door or zone.<\/p>\n<p>The most commonly used systems are:<\/p>\n<ul>\n<li><strong>Card reader systems:<\/strong> Employees or visitors use a personalized pass. The system links each pass to a person and stores every entry attempt, including denied attempts.<\/li>\n<li><strong>Biometric systems:<\/strong> Fingerprint or facial recognition makes it virtually impossible to dispute a person&#039;s identity, because access is directly linked to a unique biological characteristic.<\/li>\n<li><strong>Mobile access systems:<\/strong> Smartphones function as a digital key via an app, whereby every access action is automatically logged in the cloud.<\/li>\n<li><strong>Intercom systems with registration:<\/strong> A video door intercom with recording captures who rang the doorbell and when the door was opened.<\/li>\n<\/ul>\n<p>The major advantage of these systems is that the recording is objective and tamper-proof. Log files are typically stored encrypted and time-stamped, which significantly increases their evidential value compared to manual methods.<\/p>\n<h2>What is the evidential value of camera surveillance at access points?<\/h2>\n<p>Camera surveillance has high evidential value regarding access, provided the images are sharp enough to capture individuals clearly and the recording timestamp is set correctly. Judges and employers accept camera footage as supporting evidence, but rarely as the sole means of proof.<\/p>\n<p>The evidential value of camera footage depends on a number of factors:<\/p>\n<ul>\n<li><strong>Image quality:<\/strong> Low resolution makes identification difficult or impossible. Full HD or higher resolution is the standard for security cameras in 2026.<\/li>\n<li><strong>Camera placement:<\/strong> A camera that captures the entire entry door, including the person&#039;s face, provides stronger evidence than a camera that only records a person&#039;s back.<\/li>\n<li><strong>Storage facility:<\/strong> Images that are stored continuously and have not been edited afterwards are legally more reliable.<\/li>\n<li><strong>Privacy legislation:<\/strong> Camera footage may only be used for the purpose for which the camera was installed. Use outside that purpose may impair the evidential value or render it legally unusable.<\/li>\n<\/ul>\n<p>Camera surveillance is strongest when combined with an electronic access control system: the camera visually confirms what the log file records.<\/p>\n<h2>How can you prove access without an electronic system?<\/h2>\n<p>Without an electronic system, you can prove access via manual logs, witness statements, key records, or physical evidence such as signatures on a visitor list. These methods are less foolproof than digital alternatives, but can still have legal value in the absence of technology.<\/p>\n<p>Commonly used non-electronic methods are:<\/p>\n<ul>\n<li><strong>Visitor registration:<\/strong> A paper logbook in which visitors record their name, the time of arrival and departure, and their signature.<\/li>\n<li><strong>Key issuance with registration:<\/strong> A key cabinet book that keeps track of who received a key and when it was returned.<\/li>\n<li><strong>Witness statements:<\/strong> Colleagues, security personnel, or neighbors who can confirm that someone was present at a specific time.<\/li>\n<li><strong>Physical traces:<\/strong> Fingerprints, signatures, or other tangible evidence that substantiates the presence of a person.<\/li>\n<\/ul>\n<p>The disadvantage of manual methods is that they are easy to manipulate. A signature can be forged, a logbook can be altered. Where possible, combine these methods with additional evidence to increase reliability.<\/p>\n<h2>What is the difference between access registration and access control?<\/h2>\n<p>Access registration is the recording of who entered a space and when, whereas access control is the active management and restriction of who is allowed to enter a space. Registration is reactive and documents, while control is proactive and directs.<\/p>\n<p>In practice, both functions work together:<\/p>\n<ul>\n<li><strong>Access control<\/strong> Determines the rules: who has access to which room, at what time, and under what conditions. This can be set based on job title, department, or time zone.<\/li>\n<li><strong>Access registration<\/strong> records what actually happened: every successful and unsuccessful access attempt is stored in a log file.<\/li>\n<\/ul>\n<p>A system that combines both functions offers the highest level of security. Access control without registration does not know who actually entered. Registration without verification records everything but prevents nothing. For organizations that need to be able to demonstrate who has had access, the registration function is indispensable.<\/p>\n<h2>When is proof of access legally usable?<\/h2>\n<p>Evidence of access is legally admissible when it has been collected lawfully, is demonstrably unaltered, and complies with the requirements of the General Data Protection Regulation (GDPR). Judges assess evidence for lawfulness, reliability, and proportionality.<\/p>\n<p>The following conditions apply for legal usability:<\/p>\n<ul>\n<li><strong>Lawful basis:<\/strong> The system by which the evidence is collected must have a legal basis, such as a legitimate interest or an employment contract that permits monitoring.<\/li>\n<li><strong>Information obligation:<\/strong> Employees and visitors must be informed in advance that registration takes place, for example via a privacy statement or signs at the entrance.<\/li>\n<li><strong>Data integrity:<\/strong> Log files and camera footage must not be edited afterwards. Timestamps and audit trails enhance credibility.<\/li>\n<li><strong>Proportionality:<\/strong> The use of evidence must be proportionate to the purpose. Heavy surveillance for a minor incident may be deemed disproportionate by a judge.<\/li>\n<\/ul>\n<p>If in doubt, consult a legal advisor before using evidence in employment or criminal proceedings.<\/p>\n<h2>What steps do you take after unauthorized entry?<\/h2>\n<p>After an unauthorized entry, take immediate steps to secure evidence, assess the situation, and mitigate further risks. Acting quickly is crucial, as log files and camera footage are automatically overwritten after a certain period.<\/p>\n<p>Follow these steps in order:<\/p>\n<ol>\n<li><strong>Secure the evidence:<\/strong> Immediately export the relevant log files from the access control system and save the camera footage to an external location. Do not wait until the next day.<\/li>\n<li><strong>Document the facts:<\/strong> Note the time of discovery, who determined the unauthorized entry, and which room is involved.<\/li>\n<li><strong>Assess the damage:<\/strong> Check if anything has been taken, damaged, or altered. This determines the severity of the situation and the next steps.<\/li>\n<li><strong>Inform the right people:<\/strong> Depending on the situation, these are the supervisor, the security manager, the police, or the legal department.<\/li>\n<li><strong>File a report if necessary:<\/strong> In the event of theft, sabotage, or other criminal offenses, filing a report with the police is mandatory in order to take legal action.<\/li>\n<li><strong>Evaluate the system:<\/strong> Investigate how the unauthorized entry was possible and adjust access rights or physical security to prevent recurrence.<\/li>\n<\/ol>\n<p>A well-configured access control system makes these steps easier, as all relevant information is immediately available and exportable. Would you like to have your security assessed or have a system installed? <a href=\"https:\/\/www.sellox.nl\/en\/contact\/\">Contact us<\/a> contact Sellox for a no-obligation consultation.<\/p>\n<div class=\"wp-block-seoaic-faq-block\">\n    <h2 class=\"seoaic-faq-section-title\">Frequently Asked Questions<\/h2>\n            <div class=\"seoaic-faq-item\">\n            <h3 class=\"seoaic-question\">\n                How long must log files and camera footage be retained for evidentiary purposes?            <\/h3>\n            <p class=\"seoaic-answer\">\n                The retention period depends on the purpose and the applicable legislation. For camera footage, a maximum retention period of four weeks generally applies under the GDPR, unless there is a specific reason to retain footage longer, such as an incident or an ongoing investigation. Log files from access control systems may be retained longer if there is a legitimate reason for doing so, but here too the principle of data minimization applies: do not retain more and do not retain longer than necessary.            <\/p>\n        <\/div>\n                <div class=\"seoaic-faq-item\">\n            <h3 class=\"seoaic-question\">\n                Can an employee object to the use of access registration as evidence?            <\/h3>\n            <p class=\"seoaic-answer\">\n                Yes, an employee can object if the evidence was collected unlawfully, for example if he or she was not informed in advance about the registration. A judge may also decide to disregard the evidence if it is used disproportionately. Therefore, always ensure you have a clear privacy statement, information signs at access points, and an internal policy describing the use of registration data.            <\/p>\n        <\/div>\n                <div class=\"seoaic-faq-item\">\n            <h3 class=\"seoaic-question\">\n                What are the first steps to implementing an access control system if you don&#039;t have one yet?            <\/h3>\n            <p class=\"seoaic-answer\">\n                Start with a risk analysis: map out which areas are sensitive, who has access to them, and which incidents you want to be able to document. Next, choose a system that suits the scale of your organization, such as a card system for small businesses or a more comprehensive platform with biometrics and cloud registration for larger locations. Seek advice from a specialist, such as Sellox, to ensure the system is set up correctly, both technically and legally.            <\/p>\n        <\/div>\n                <div class=\"seoaic-faq-item\">\n            <h3 class=\"seoaic-question\">\n                What if someone has passed a pass to another person \u2014 how do you prove who really went inside?            <\/h3>\n            <p class=\"seoaic-answer\">\n                This is a known weakness of card systems: the card registers the card, not the person. Therefore, always combine card access with an additional verification method, such as a PIN code or CCTV at the entry door. Biometric systems completely solve this problem, because access is directly linked to a unique personal identifier and is non-transferable.            <\/p>\n        <\/div>\n                <div class=\"seoaic-faq-item\">\n            <h3 class=\"seoaic-question\">\n                How do you prevent log files from being challenged as evidence due to possible manipulation?            <\/h3>\n            <p class=\"seoaic-answer\">\n                Use a system that stores log files encrypted and provides them with an immutable timestamp, preferably via an external server or cloud solution that is outside the administrator&#039;s sphere of influence. Also ensure an audit trail that tracks who has had access to the log data itself. The fewer people who can modify the data, the greater the legal reliability.            <\/p>\n        <\/div>\n                <div class=\"seoaic-faq-item\">\n            <h3 class=\"seoaic-question\">\n                Is access registration also useful for small businesses or freelancers with a shared workspace?            <\/h3>\n            <p class=\"seoaic-answer\">\n                Certainly, access control offers added value even for smaller environments, particularly when multiple parties use the same space or when valuable equipment or confidential information is present. Compact systems based on mobile access or smart locks are affordable and easy to install without major infrastructure modifications. Even a basic record of who was present and when can make all the difference in the event of a dispute.            <\/p>\n        <\/div>\n                <div class=\"seoaic-faq-item\">\n            <h3 class=\"seoaic-question\">\n                What are common mistakes when setting up an access registration system?            <\/h3>\n            <p class=\"seoaic-answer\">\n                A common mistake is placing cameras in positions that do not fully capture the entrance door, making facial recognition impossible afterwards. Other errors include failing to set the correct system time, resulting in incorrect timestamps, and the lack of a procedure for the timely securing of evidence after an incident. Finally, organizations frequently fail to demonstrably inform employees and visitors about the recording, which can undermine the legal admissibility of the evidence.            <\/p>\n        <\/div>\n        <\/div>","protected":false},"excerpt":{"rendered":"<p>Ontdek hoe elektronische toegangsregistratie en camerabeelden waterdicht bewijs leveren van wie een ruimte betrad.<\/p>","protected":false},"author":3,"featured_media":7695,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","rank_math_focus_keyword":"toegangsbeheer","rank_math_seo_score":0,"rank_math_title":"","rank_math_description":"Bewijs wie toegang had via elektronische logbestanden, camerabeelden of getuigen. Ontdek welke methode juridisch sterk staat \u00e9n bij jou past.","rank_math_canonical_url":"","rank_math_robots":"","rank_math_pillar_content":""},"categories":[1],"tags":[],"class_list":["post-7454","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/posts\/7454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/comments?post=7454"}],"version-history":[{"count":1,"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/posts\/7454\/revisions"}],"predecessor-version":[{"id":7575,"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/posts\/7454\/revisions\/7575"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/media\/7695"}],"wp:attachment":[{"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/media?parent=7454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/categories?post=7454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sellox.nl\/en\/wp-json\/wp\/v2\/tags?post=7454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}