The disclosed ladder system may be disposed in a store, warehouse, library, or similar facility where two storage shelves form an aisle. User-specific entities are extracted from social media content associated with a user. Furthermore, a kit can be provided that contains parts used in mixing andor dispensing viscous material. In particular, a fragmentation measure is determined according to the transmission sequence in an automatic manner using a formal expression of fragmentation. Therefore, the acceleration sensor can be reduced in size. The surface modifier is reversibly attached to the bottom surface of the elongated body thus providing the bottom surface with a smooth texture suitable for downhill skiing when the second rough textured surface is attached to the bottom surface and with a rough texture suitable for uphill and cross country skiing when the first smooth textured surface is attached to the bottom surface.