Self-checkout is vulnerable to some shoplifting techniques. In some cases the machine will pick up the attempt to steal, or cause the shopper to alter their behavior (e.g. an item can be put not on the scales but somewhere else where it should not be put, and this may be noticed by the system supervisor). For example, in 2007, a man was charged with replacing the tag of a plasma TV with a $4.88 DVD, and trying to purchase it through self-checkout.[8]