LEAD Horizon stores the data of the test participants, their COVID-19 infection status as well as technical telemetry data necessary for the operation of the web app and for carrying out the tests. The data are stored by the German enterprise Hetzner Online GmbH, which operates an ISO-certified computing centre and deletes these data 14 days after delivery of the test result. LEAD Horizon communicates your social security number, name, phone number, postal address and email address to the Lifebrain COVID lab. The lab findings are submitted to the health authority and further processed as follows: All positive test results are communicated to the Epidemiological Information System of the City of Vienna, where they are stored and deleted after expiry of the prescribed retention period. nAll negative test results are communicated to the screening database of the City of Vienna, where they are stored and deleted after expiry of the prescribed retention period. The photos are viewed by selected staff members of LEAD Horizon for quality assurance purposes as well as in case of complaints. These data, too, are deleted 14 days after delivery of the test result.