A portable device for monitoring a user’s geographic location, substantially a time of the geographic location measurement, verification status of the user’s identity is provided. The first and third electrodes are supplied with an anode voltage of the phosphor screen, and the second electrode is supplied with a focus voltage lower than the anode voltage. In certain embodiments, the lignin-enriched fraction includes a lignin content that is 5 percentage points greater than the weight percent lignin present in the original lignocellulosic material. The runners glide along a track guide system mounted onto the handrails of the pontoon boat. The spot welding tool has a pressure element for holding down the workpieces arranged on the electrode in a region of the electrode cap to prevent process-dependent warping or arching of the workpiece. The first device comprises a mechanism to readwrite data fromto an NFC data carrier.