The Campuscard does not contain any personal data of students in electronic form except the library number. The machines retrieve all of the personal information online, using a pseudonym, so no personal data are stored in the machines, either. The machine does not store photographs, and communications are encrypted.
No personal data aside from the library number are stored on the chip. The chip contains only an anonymous, but unique, card ID code. Use of the dining hall card is also anonymous.