What Digital Fingerprinting tracking is?

In the digital age, where user data is a valuable currency, businesses are constantly seeking innovative tracking methods. Digital fingerprinting has emerged as an alternative to traditional cookies, offering unique advantages and raising new concerns. This comprehensive guide will delve into the intricacies of digital fingerprinting, exploring its approach to user identification, behavior tracking capabilities, user control aspects, privacy concerns, and the ability to delete or reset fingerprinting data.

Introduction to Digital Fingerprinting:

Digital fingerprinting, or device fingerprinting, is a sophisticated tracking method that analyzes various device and browser attributes to create a unique identifier for each user. Unlike cookies, which rely on stored data on a user’s device, digital fingerprinting generates and stores identifiers without user consent or knowledge. By collecting information such as browser settings, plugins, screen resolution, and fonts, digital fingerprinting builds a distinctive profile for each user, enabling personalized tracking and analysis.

Approach to User Identification;

Digital fingerprinting utilizes a combination of device and browser attributes to create a unique identifier for each user. This identifier, often called a fingerprint, is a collection of data points that help distinguish one user from another. By analyzing attributes like user agent string, IP address, operating system details, and hardware information, digital fingerprinting algorithms generate a fingerprint that remains relatively stable across browsing sessions, enabling effective user identification for tracking purposes.

Unique Identifiers without Relying on Cookies:

One of the key advantages of digital fingerprinting is its ability to generate and store unique identifiers without relying on cookies. While cookies are stored on a user’s device and can be easily cleared or blocked, digital fingerprinting generates identifiers based on device attributes that are difficult to alter or remove. This persistence allows tracking across browsing sessions and even different browsers or devices, providing a more comprehensive understanding of user behavior.

Behavior Tracking Capabilities:

Similar to cookies, digital fingerprinting enables tracking and analysis of user behavior. By associating user behavior with their unique fingerprint, marketers can gain insights into browsing patterns, interests, and preferences. This data can be used to personalize user experiences, deliver targeted advertisements, and optimize marketing strategies. Additionally, digital fingerprinting can track user interactions, such as clicks, page views, and conversions, providing valuable metrics for measuring campaign effectiveness.

Based on the ePrivacy Directive, which is often referred to as the “Cookie Law,” the term “similar tracking technology” is meant to encompass a wide range of methods used to track users’ online activities. This includes not just traditional cookies but also various other technologies that can be used to identify and track individuals as they navigate the internet. The aim is to cover any technology that tracks users in a way comparable to cookies.

Fingerprinting technology is indeed considered a “similar tracking technology” under this directive. Here’s why:

What is Fingerprinting?

Fingerprinting involves gathering information about a user’s device, browser, and other settings to create a unique profile, or “fingerprint,” of that user. Unlike cookies, which store information on the user’s device, fingerprinting collects data from the user’s interactions and characteristics of their device.

Why Fingerprinting is Covered:

The ePrivacy Directive’s broad definition of tracking technologies includes any method of storing or accessing information on a user’s device. Since fingerprinting can be used to uniquely identify and track users over time and across websites, it falls under the scope of “similar tracking technologies.”

The intrusive nature of fingerprinting, in terms of privacy, aligns with the concerns addressed by the ePrivacy Directive. It is designed to track users’ online behavior and preferences, similar to how cookies function.

Privacy Implications:

Fingerprinting is often seen as more invasive than traditional cookies because it can be harder for users to detect and control. Unlike cookies, users cannot easily clear their fingerprint, and it can operate without their knowledge.

Consent Requirement:

Just like with cookies, the use of fingerprinting technology typically requires informed consent from the user under the ePrivacy Directive. Users must be made aware that such tracking is taking place and must be given a choice to opt in or out.

It’s important to note that the ePrivacy Directive is subject to interpretation and implementation by individual EU member states, so the specific legal requirements can vary by country. Moreover, with the ongoing development of the ePrivacy Regulation (intended to replace the Directive), there may be updates or clarifications regarding the use of such technologies in the future.

There is some situation that I don’t need consent to track with fingerprinting tech?

Under current EU privacy laws, including the ePrivacy Directive and GDPR, the use of fingerprinting technology for tracking usually requires user consent, especially when it involves personal data or could potentially impact an individual’s privacy. However, there might be some specific situations where consent is not strictly required:

Strictly Necessary for Service Delivery:

If the use of fingerprinting is strictly necessary to provide a service explicitly requested by the user, consent might not be needed. For example, if fingerprinting is essential for the functionality of a secure online service that a user has chosen to use, such as for fraud prevention or ensuring the security of a user session.

Anonymized Data:

If the fingerprinting technology is used in a way that the data collected is completely anonymized (i.e., it is impossible to re-identify the individual), and if this process happens on the user’s device (edge processing) without transmitting personal data, consent might not be required.

Statistical Purposes:

Some interpretations of the ePrivacy Directive allow for the use of tracking technologies for purely statistical purposes without consent. However, this is a grey area and largely depends on the implementation of the law in individual EU member states and the nature of the statistical processing.

Legal Obligations:

If the tracking is required to comply with a legal obligation, consent may not be necessary. This would be a rare case and would typically be dictated by specific legal requirements.

It’s important to emphasize that these situations are exceptions and can be subject to legal interpretation and regional variations in EU member states. The general rule under EU privacy law is that any form of tracking that could potentially impact a user’s privacy rights requires informed and explicit consent.

Furthermore, the landscape of privacy laws is continuously evolving. What might be a current interpretation or implementation could change, especially with the forthcoming ePrivacy Regulation, which is set to replace the ePrivacy Directive. Therefore, it’s always advisable to consult with legal experts familiar with the latest in privacy law and its application to technologies like fingerprinting.

I can’t identify a user with my fingerprinting ID, should I ask for consent?

Yes, you should still ask for consent when using fingerprinting technology, even if you cannot personally identify a user with the fingerprinting ID. The key reasons for this are related to privacy and data protection regulations, particularly in the context of the European Union’s GDPR (General Data Protection Regulation) and ePrivacy Directive:

Broad Definition of Personal Data: Under GDPR, personal data is defined broadly. It includes any information that can be used to directly or indirectly identify a person. Even if you cannot identify a user with the fingerprinting ID alone, the combination of this ID with other data could potentially lead to identification.

Invasiveness of Fingerprinting: Fingerprinting technology is considered invasive because it collects detailed information about a user’s device and behavior. This type of data collection is subject to consent requirements, as it can profile a user’s online activities.

User Consent for Tracking Technologies: The ePrivacy Directive (often referred to as the “Cookie Law”) mandates consent for any form of tracking technologies, which includes fingerprinting. This is because such technologies access information on the user’s device.

Ethical Considerations: Beyond legal requirements, there’s an ethical aspect to consider. Transparency and user consent are becoming increasingly important to users. Respecting their privacy preferences fosters trust and aligns with best practices in data management.

Ambiguity in Identifiability: The fact that you currently can’t identify a user with a fingerprinting ID doesn’t guarantee that this will always be the case. Future technological developments or data combinations could potentially change the identifiability of this data.

Regional Differences in Privacy Laws: While the GDPR and ePrivacy Directive are specific to the EU, other regions may have similar or even stricter regulations regarding user data and consent. It’s important to consider these if your website or application has a global audience.

If I delete the user-id created with digital fingerprinting every night? so i’ts impossible to identify with a user?

Deleting the user-ID created with digital fingerprinting every night can reduce the risk of long-term user tracking and identification. However, this practice doesn’t completely negate the need for consent under current privacy laws, particularly in jurisdictions with stringent data protection regulations like the European Union. Here are some points to consider:

Short-Term Tracking Implications: Even if you delete the user-IDs nightly, you are still collecting and potentially using that data within that day. This constitutes a form of user tracking, which under laws like the GDPR and ePrivacy Directive, typically requires user consent.

Nature of Fingerprinting Data: Fingerprinting collects various pieces of information about a user’s device and behavior. This data, in itself, could be considered personal or identifiable, especially if it can be linked with other data, even briefly.

Consent for Data Collection: Consent is often required not just for the storage of data, but also for its collection and initial processing. Therefore, the act of collecting fingerprinting data itself might necessitate user consent, regardless of how long the data is retained.

Legal and Ethical Considerations: The practice of deleting IDs nightly may be viewed positively from a privacy standpoint, but it doesn’t fully exempt the process from legal obligations regarding user consent. Additionally, transparency and ethical considerations in data handling practices are increasingly important to users and regulators.

Potential for Re-Identification: Even if user-IDs are deleted daily, there’s a potential risk that the collected data within that period could be used to re-identify an individual, especially if combined with other datasets.

Changing Privacy Regulations: Privacy laws and interpretations are continually evolving. Practices that may currently be in a grey area could become more clearly defined in future regulations.

In conclusion, while deleting user-IDs created through digital fingerprinting nightly is a step towards enhancing user privacy, it does not entirely eliminate the need for obtaining user consent. The collection, processing, and potential short-term identification capabilities of fingerprinting data still place it within the scope of privacy regulations that typically require consent. It is advisable to stay informed about the latest privacy laws and consult with legal experts for compliance guidance.

User Control Aspects:

One significant difference between cookies and digital fingerprinting is the user control aspect. Users can easily manage cookies, accept or reject them, delete stored cookies, or configure browser settings to limit tracking. In contrast, digital fingerprinting operates silently in the background without explicit user consent or control options. This lack of user control raises concerns about transparency, privacy, and the ability to opt out of tracking.

Privacy Concerns and Cross-Device Tracking:

Digital fingerprinting has sparked privacy concerns due to its potential for cross-device tracking. Since digital fingerprints can be generated based on multiple attributes, including IP addresses and hardware details, tracking users across different devices and platforms becomes possible. This raises questions about user privacy, data security, and the potential for unauthorized tracking or profiling.

Deleting or Resetting Fingerprinting Data:

Unlike cookies, which can be easily cleared or managed by users, deleting or resetting digital fingerprinting data is more challenging. Since fingerprints are based on device attributes that are not easily changed, removing or altering them requires specialized knowledge and tools. This lack of control over fingerprinting data deletion raises concerns about user privacy and the permanence of collected data.


Digital fingerprinting offers an alternative tracking method with unique advantages and challenges. Digital fingerprinting enables behavior tracking and user identification without relying on cookies by generating unique identifiers based on device attributes. However, the lack of user control and potential privacy concerns require careful consideration. As marketers, it is essential to balance personalized experiences and user privacy, ensuring transparent communication and providing opt-out options whenever possible. The evolution of digital fingerprinting will continue to shape the marketing landscape, calling for ongoing discussions and industry standards to protect user rights and maintain trust in the digital ecosystem.