The invention relates to a measuring device with a sensor for monitoring the ignition voltage of an associated cylinder of an internal combustion engine, said sensor being arranged along the ignition conductor, between the spark plug and the ignition coil. The process of the present invention combines the slurry bed reactor with the fixed bed reactor andor the moving bed reactor so as to overcome the disadvantages of the low conversion of H2O2 in the case that only the fixed bed reactor andor the moving bed reactor are used, and the low selectivity for the target alkylene oxide in the case that only the slurry bed reactor is used. Player software is run on the OS2 to protect the player software against illegal analysis and alteration by the user. The processing unit is configured to calculate a tilt angle according to the three-dimensional acceleration. This ensures performance of the predetermined abnormality detection. The mobile device may be configured to scan for a wide variety of tags, including tags in the form of quick response codes, steganographic content, audio watermarks, audio outside of a human audible range, radio frequency identification tags, long wavelength identification tags, near field communication tags, andor a Memory Spot device.