Line guidance and grid localization are simple forms of localization for automated guided vehicles. For line guidance, the sensor detects an optical or magnetic line and outputs the position deviation to the line. For grid localization, the sensor detects 2D codes which are attached to the floor as rasters and deliver position data to the vehicle control.

Linear measurement sensors from SICK use highly innovative technologies for the non-contact measurement of positions, speeds, and lengths. The OLM sensors' camera-based system determines the current position based on a mounted bar code tape. This acts as a reference point against which the OLM sensor can position itself accurately, depending on variants, over a length of up to 10 km and as little as 0.15 mm, regardless of whether the product travel path is in a straight line or curved.