Abstract: A system, having at least one radiation source and at least one mobile terminal, which has at least one optical sensor and a data-processing device, wherein the at least one optical sensor of the at least one mobile terminal is designed and configured to receive reflected radiation of the radiation source, so that surface structures, more particularly fouling, are detected from the received radiation of the radiation source by means of the data-processing device and, in particular, are stored in the data-processing device.

Abstract: The present invention relates to a device that is in particular detachable, connectable, or connected with a cleaning device, wherein the device comprises at least one sensor means in order to record the position of at least one cleaning area of a cleaning device, which area can be or is used for cleaning, at least one display device, and at least one data processing unit which interacts or can be made to interact functionally with the display device, and with the at least one sensor means, wherein the data processing device is configured and adapted to display at least one representation of at least one surface to be cleaned in at least one first color or without color and, based on a recorded change in the position of at least the cleaning area of the cleaning device, to display the surface to be cleaned in at least one second color or without superimposition of color.

Abstract: A location-based service, and in particular location-based services involving mobile devices. With the disclosed method it is possible to provide individual information at a certain location to individual users, wherein the information may be based on a location profile that may be updated depending on inputs of the user itself or other users.

Abstract: The present invention relates to a device that is in particular detachable, connectable, or connected with a cleaning device, wherein the device comprises at least one sensor means in order to record the position of at least one cleaning area of a cleaning device, which area can be or is used for cleaning, at least one display device, and at least one data processing unit which interacts or can be made to interact functionally with the display device, and with the at least one sensor means, wherein the data processing device is configured and adapted to display at least one representation of at least one surface to be cleaned in at least one first color or without color and, based on a recorded change in the position of at least the cleaning area of the cleaning device, to display the surface to be cleaned in at least one second color or without superimposition of color.

Abstract: A location-based service, and in particular location-based services involving mobile devices. With the disclosed method it is possible to provide individual information at a certain location to individual users, wherein the information may be based on a location profile that may be updated depending on inputs of the user itself or other users.