A time and/or attendance recording device for recording the time and/or attendance of persons , wherein the time and/or attendance recording device has a local memory or is connected to a local memory , wherein the time and/or attendance recording device has a communication interface for communication with a server system , wherein personal data can be stored in the local memory , wherein the time and/or attendance recording device is configured in such manner that personal data is stored in the local memory depending on to which group of people from a plurality of groups of people a person is assigned, wherein the plurality of groups of people comprises at least a first group of people, wherein the plurality of groups of people comprises a second group of people, wherein personal data relating to persons , who are assigned to the first group of people, is stored in the local memory , wherein the personal data relating to persons , who are assigned to the second group of people, is not stored in the local memory , wherein the time and/or attendance recording device is configured in such manner that: - if the assignment of a person changes from the first group of people to the second group of people, the personal data relating to this person present in the local memory is partially or completely removed from the local memory ; and - if the assignment of a person changes from the second group of people to the first group of people, personal data relating to this person is received by the time and/or attendance recording device from the server system , wherein the received personal data is stored in the local memory . wherein the time and/or attendance recording device has a local memory or is connected to a local memory , wherein the time and/or attendance recording device has a communication interface for communication with a server system , wherein personal data can be stored in the local memory , wherein the time and/or attendance recording device is configured in such manner that personal data is stored in the local memory depending on to which group of people from a plurality of groups of people a person is assigned, wherein the plurality of groups of people comprises at least a first group of people, wherein the plurality of groups of people comprises a second group of people, wherein personal data relating to persons , who are assigned to the first group of people, is stored in the local memory , wherein the personal data relating to persons , who are assigned to the second group of people, is not stored in the local memory , wherein the time and/or attendance recording device is configured in such manner that: - if the assignment of a person changes from the first group of people to the second group of people, the personal data relating to this person present in the local memory is partially or completely removed from the local memory ; and - if the assignment of a person changes from the second group of people to the first group of people, personal data relating to this person is received by the time and/or attendance recording device from the server system , wherein the received personal data is stored in the local memory . - if the assignment of a person changes from the first group of people to the second group of people, the personal data relating to this person present in the local memory is partially or completely removed from the local memory ; and - if the assignment of a person changes from the second group of people to the first group of people, personal data relating to this person is received by the time and/or attendance recording device from the server system , wherein the received personal data is stored in the local memory . <EOS>