The Catholic Adult Education Trier (KEB) started the so-called "Kulturkapellen" ("Cultural Chapels") project to fill chapels in the diocese with cultural life and open them to visitors. The smart signs from tuomi with QR code and NFC chip are part of the project. Whether the doors are locked or not, information and multimedia stories about the chapels are available at any time. Only one's own smartphone is needed, an app is not required.