Privacy policy

1. Privacy at a glance

Data collection on this website

Who is responsible for data collection on this website?

The data processing on this website is carried out by the website operator. You can find their contact details in the section "Notice regarding the responsible party" in this privacy policy.

How do we collect your data?

On the one hand, you provide us with data yourself, e.g., when you contact us by email.

Other data are collected automatically or with your consent by our IT systems when you visit the website — mainly technical data (e.g., internet browser, operating system, or time of the page view).

What do we use your data for?

Part of the data is collected to ensure the website is provided without errors. Other data may be used to analyze your usage behavior. Where contracts can be concluded or initiated via the website, the transmitted data are also processed for contract offers, orders, or other inquiries.

What are your rights regarding your data?

You have the right to receive information about the origin, recipients, and purpose of your stored personal data free of charge at any time. You also have the right to request the rectification or erasure of this data. If you have given consent to data processing, you may revoke this consent at any time with future effect. You also have the right, under certain circumstances, to request the restriction of the processing of your personal data. Furthermore, you have the right to lodge a complaint with the competent supervisory authority.

You can contact us at any time regarding this and other questions on the subject of data protection.

Analytics tools and third-party tools

When you visit this website, your surfing behavior may be statistically evaluated. This is done primarily using so-called analytics programs.

Detailed information on these analytics programs can be found in the following privacy policy.

2. Hosting

External hosting

This website is hosted externally. The personal data collected on this website are stored on the servers of the hosting provider. This may include, in particular, IP addresses, contact requests, meta and communication data, contract data, contact details, names, website accesses, and other data generated via a website.

External hosting is carried out for the purpose of fulfilling contracts with our potential and existing customers (Art. 6 (1) (b) GDPR) and in the interest of a secure, fast, and efficient provision of our online services by a professional provider (Art. 6 (1) (f) GDPR). Where the appropriate consent was requested, processing takes place exclusively on the basis of Art. 6 (1) (a) GDPR and § 25 (1) TDDDG, insofar as the consent covers the storage of cookies or access to information on the user's device (e.g., device fingerprinting) within the meaning of the TDDDG. Consent can be revoked at any time.

Our hosting providers will only process your data to the extent necessary to fulfill their service obligations and will follow our instructions with regard to this data.

We use the following hosting providers:

• netcup GmbH, Daimlerstraße 25, 76185 Karlsruhe, Germany
• GitHub BV, Gustav-Heinemann-Ufer 74, 50968 Cologne, Germany

The website files are delivered via GitHub Pages. In the process, technical access data (e.g., IP address, time of the page view) are processed by GitHub, Inc. (USA); GitHub, Inc. is certified under the EU–US Data Privacy Framework (Art. 45 GDPR).

3. General information and mandatory information

Data protection

The operators of this website take the protection of your personal data very seriously. We treat your personal data confidentially and in accordance with the statutory data protection regulations and this privacy policy.

When you use this website, various personal data are collected. Personal data are data with which you can be personally identified. This privacy policy explains which data we collect and what we use them for, as well as how and for what purpose this is done.

We would like to point out that data transmission over the internet (e.g., communication by email) may have security gaps. Complete protection of the data against access by third parties is not possible.

Notice regarding the responsible party

The responsible party for data processing on this website is:

Zacharias Steinmetz
Email: hi@zsteinmetz.de

The responsible party is the natural or legal person who, alone or jointly with others, decides on the purposes and means of the processing of personal data (e.g., names, email addresses, etc.).

Storage duration

Unless a more specific storage period has been specified within this privacy policy, your personal data will remain with us until the purpose for the data processing no longer applies. If you request the erasure of your data or revoke consent to data processing, your data will be erased unless we have other legally permissible reasons for storing it (e.g., tax or commercial retention periods). In that case, the erasure takes place once these reasons no longer apply.

General information on the legal bases of data processing on this website

If you have consented to data processing, we process your personal data on the basis of Art. 6 (1) (a) GDPR or Art. 9 (2) (a) GDPR, where special categories of data within the meaning of Art. 9 (1) GDPR are processed. In the case of explicit consent to the transfer of personal data to third countries, data processing is also carried out on the basis of Art. 49 (1) (a) GDPR. If you have consented to the storage of cookies or to access to information on your device (e.g., via device fingerprinting), data processing is additionally carried out on the basis of § 25 (1) TDDDG. Consent can be revoked at any time. If your data are required for the fulfillment of a contract or for the implementation of pre-contractual measures, we process your data on the basis of Art. 6 (1) (b) GDPR. Furthermore, we process your data, where required for the fulfillment of a legal obligation, on the basis of Art. 6 (1) (c) GDPR. Data processing may also be carried out on the basis of our legitimate interest pursuant to Art. 6 (1) (f) GDPR. The relevant legal bases in each individual case are explained in the following paragraphs of this privacy policy.

Recipients of personal data

As part of our business activities, we work together with various external parties. In some cases, the transfer of personal data to these external parties is also required. We only pass on personal data to external parties if this is necessary within the framework of contract fulfillment, if we are legally obliged to do so (e.g., transfer of data to tax authorities), if we have a legitimate interest within the meaning of Art. 6 (1) (f) GDPR in the transfer, or if another legal basis permits the data transfer. When using data processors, we only pass on our customers' personal data on the basis of a valid data processing agreement. In the case of joint processing, a corresponding agreement is concluded.

Revocation of your consent to data processing

Many data processing operations are only possible with your explicit consent. You can revoke consent you have already given at any time. The lawfulness of the data processing carried out until the revocation remains unaffected by the revocation.

Right to object to data collection in special cases (Art. 21 GDPR)

If the data processing is based on Art. 6 (1) (e) or (f) GDPR, you have the right to object to the processing of your personal data at any time, for reasons arising from your particular situation; this also applies to profiling based on these provisions. The relevant legal basis on which processing is based can be found in this privacy policy. If you object, we will no longer process the personal data concerned unless we can demonstrate compelling legitimate grounds for the processing which override your interests, rights, and freedoms, or the processing serves the assertion, exercise, or defense of legal claims (objection pursuant to Art. 21 (1) GDPR).

Right to lodge a complaint with the competent supervisory authority

In the event of violations of the GDPR, data subjects have the right to lodge a complaint with a supervisory authority, in particular in the member state of their habitual residence, place of work, or place of the alleged violation. The right to lodge a complaint exists without prejudice to other administrative or judicial remedies.

Right to data portability

You have the right to have data that we process automatically on the basis of your consent or in fulfillment of a contract handed over to you or to a third party in a common, machine-readable format. If you request the direct transfer of the data to another controller, this will only take place to the extent that it is technically feasible.

Access, rectification, and erasure

Within the framework of the applicable statutory provisions, you have the right at any time to free information about your stored personal data, its origin and recipients, and the purpose of the data processing and, if applicable, a right to rectification or erasure of this data. For this purpose and for further questions on the subject of personal data, you can contact us at any time.

Right to restriction of processing

You have the right to request the restriction of the processing of your personal data. To do so, you can contact us at any time. The right to restriction of processing applies in the following cases:

• If you dispute the accuracy of your personal data stored by us, we generally need time to verify this. For the duration of the verification, you have the right to request the restriction of the processing of your personal data.
• If the processing of your personal data was/is unlawful, you can request the restriction of data processing instead of erasure.
• If we no longer need your personal data, but you need it for the exercise, defense, or assertion of legal claims, you have the right to request the restriction of the processing of your personal data instead of erasure.
• If you have lodged an objection pursuant to Art. 21 (1) GDPR, a balancing of your and our interests must be carried out. As long as it is not yet clear whose interests prevail, you have the right to request the restriction of the processing of your personal data.

If you have restricted the processing of your personal data, these data — apart from their storage — may only be processed with your consent or for the assertion, exercise, or defense of legal claims or for the protection of the rights of another natural or legal person or for reasons of an important public interest of the European Union or a member state.

SSL or TLS encryption

This site uses SSL or TLS encryption for the protection of the transmission of confidential content (e.g., orders or inquiries that you send to us). An encrypted connection is indicated by the address line of the browser changing from "http://" to "https://" and by the lock symbol in your browser line.

When SSL or TLS encryption is activated, the data you transmit to us cannot be read by third parties.

4. Data collection on this website

Cookies and local storage

This website does not set cookies. To store your language and design preferences, the website uses your browser's local storage (localStorage). These data remain on your device and are not transmitted to us or third parties; they can be deleted at any time via your browser settings.

If cookies or comparable technologies are used in the future, storage or access will only take place insofar as this is necessary to provide the function you have explicitly requested (§ 25 (2) TDDDG) or on the basis of consent (Art. 6 (1) (a) GDPR and § 25 (1) TDDDG); consent can be revoked at any time.

Server log files

The hosting provider collects and stores information in so-called server log files, which your browser transmits automatically. These are:

• Browser type and browser version
• Operating system used
• Referrer URL
• Hostname of the accessing computer
• Time of the server request
• IP address

These data are not merged with other data sources.

The collection of these data is based on Art. 6 (1) (f) GDPR. The website operator has a legitimate interest in the technically error-free presentation and optimization of its website — for this purpose, the server log files must be collected.

5. External links

This website contains links to external websites (e.g., Google Scholar, ORCID, GitHub, LinkedIn, OpenStreetMap). By clicking on these links, you leave our website. The respective operators are responsible for the data processing of the linked sites; their privacy policies apply there.

6. Analytics tools

This website uses the open-source web analytics service Matomo.

With Matomo, we collect and analyze data on the use of our website by visitors. This allows us to find out, among other things, when which page views were made and from which region they originate. We also collect various log files (e.g., IP address, referrer, browsers and operating systems used) and can measure whether our website visitors perform certain actions (e.g., clicks, purchases, etc.).

The use of this analytics tool is based on Art. 6 (1) (f) GDPR. The website operator has a legitimate interest in analyzing user behavior in order to optimize its web offering. Where the appropriate consent was requested, processing takes place exclusively on the basis of Art. 6 (1) (a) GDPR and § 25 (1) TDDDG, insofar as the consent covers the storage of cookies or access to information on the user's device (e.g., device fingerprinting) within the meaning of the TDDDG. Consent can be revoked at any time.

IP anonymization and cookieless analysis

In the analysis with Matomo, we use IP anonymization. Your IP address is truncated before the analysis so that it can no longer be clearly assigned to you.

We have configured Matomo so that it does not store cookies in your browser. Matomo is automatically deactivated when your browser informs us that you do not wish to be tracked (via the so-called "Do Not Track" setting in your browser settings).

Hosting

We run Matomo in a webspace managed by us at our hosting provider. The analysis data remain on this webspace and are not passed on to third parties.