Intoximeters Alco-Sensor IV @ Work software works with a LabelWriter printer that produces printed results on self-stick labels.  These labels are not tamper-evident.  In fact, in some cases, they can be removed from the Alcohol Testing Form without leaving any pieces behind. In our training courses, we always teach BATs using the Alco-Sensor IV @ Work system to use evidence tape on these labels so they cannot be removed from the form without some residue being left behind to indicate tampering. Please note that Intoximeters does offer self-stick rolls of paper that are tamper proof but these paper rolls are for different printer products and do not work with the LabelWriter.