Privacy policy
Controller: LeZo (Andrin Portmann), Usserhus 8, 6023 Rothenburg, Switzerland, info@lezo.ch (see Imprint).
These pages contain no forms and set no tracking cookies. If you write to us by email, we use your details only to answer your message. For receiving email we use Gmail (Google) (mail to info@lezo.ch is forwarded there by Cloudflare Email Routing); data may also be processed abroad in the process.
Licence key in your browser (guides and calculators)
Without a LeZo subscription, guides on this website show only the beginning. If you enter your LeZo licence key or are signed in to «My account» with a subscription, your browser checks the key without contacting a server and stores only the key in the browser's local storage (name «lezo_lizenz_v1»). The key contains no name and no e-mail address. You can delete it by clearing the site data for lezo.ch in your browser. The legal basis is the performance of your subscription contract.
Hosting and technical processing when you visit this website
This website is delivered through the service Cloudflare (Cloudflare, Inc., 101 Townsend St, San Francisco, CA 94107, USA). Cloudflare forwards your request over an encrypted connection (HTTPS) to our server in Switzerland and operates the domain name system (DNS) for our domain. In doing so, Cloudflare processes technically necessary data, in particular your IP address, date and time of the visit, the requested address and browser details (for example browser type). Cloudflare acts as our processor under a data processing addendum.
Purpose and basis: We use Cloudflare so that the website is available and protected against misuse and attacks. This is our legitimate interest (Art. 6(1)(f) GDPR where applicable; under the Swiss FADP: proportionality and purpose limitation).
Transfers to the USA: Cloudflare may process data in the USA and other countries. Cloudflare states that it participates in the Data Privacy Framework (EU–US, UK extension and Swiss–US). In addition, the data processing addendum provides for the EU Standard Contractual Clauses, with the necessary adjustments for Swiss data.
What we do not do: We do not use tracking cookies or third-party advertising or analytics services.
Anonymous page counter: On our own server in Switzerland we count page views to see which pages are read. Per day we store only the requested page, the type of visit (visitor, crawler or own visit), the referring domain (the website you came from, without path) and the number. We do not store IP addresses, cookies or browser identifiers and we do not try to recognise individual persons. If a link to our pages contains an identifier (the addition “?von=”), we also count this identifier. It only designates the channel or page through which the link was distributed (for example a newsletter type or a social media page), never a person. Unknown identifiers are counted as “other”. We keep these figures for a maximum of 24 months. The basis is our legitimate interest in improving our offer.
Counting of addresses not found: If someone requests an address on lezo.ch that does not exist (error 404), we count that address to find and repair broken or outdated links. Per day we store only the path (without anything after the «?») and the count. If the visit came from another website, we additionally store only that site's domain name (e.g. «example.com», without path or parameters; at most 20 sources per address and day). We store no IP address, no cookie and no browser identifier. We delete these figures after 30 days. The basis is our legitimate interest in a working website.
Cloudflare may keep its own short-term technical logs for operation and security. We have no access to individual visitor data there and do not evaluate it. To protect against automated access (bots), Cloudflare may set technically necessary cookies, for example “__cf_bm” (valid for 30 minutes according to Cloudflare; Cloudflare states it does not use it to track visitors from site to site). These cookies are not used for advertising or audience measurement. You can block or delete cookies in your browser; access may then be limited in individual cases.
Contact
AI assistance: When we process and answer your emails, we use AI-supported services from third-party providers, which may process data abroad (for example in the USA). Please do not send confidential information. Replies are checked before they are sent; there are no purely automated decisions.
Retention: We delete emails at the latest 12 months after receipt, or within 30 days on request, unless a legal retention duty applies.
Your rights (access, correction, deletion, objection) and questions: info@lezo.ch. Complaints in Switzerland: FDPIC (edoeb.admin.ch); for visitors from the EU or the UK: the competent supervisory authority.