Arvato Systems and the Pepper robot L.I.S.A., who was the secret star and delighted visitors young and old alike, have already taken part twice. L.I.S.A. encouraged children to dance, didn't let the butter be taken from their bread during tic-tac-toe and gave tips on clothes - the kids were blown away. Another Arvato Systems campaign: virtual reality for logistics processes. With VR glasses on their noses, visitors could move around a virtual warehouse, transport packages from A to B, scan them and place them on conveyor belts. The huge crowd shows: The MINT Join-In Day is a great event to bring digitalisation in the here and now closer to the younger audience.