1. A method for assessing a condition of at least one value document with regard to limpness using an ultrasound device to obtain transmission values, comprising the steps of: determining from transmission values representing the ultrasound transmission at different places on the value document a condition value, the condition value depending on a local variation of the transmission values and characterizing the condition of the value document with regard to limpness, wherein the local variation of the transmission values is a change or fluctuation between the transmission values at different places and not an average of transmission values; and determining a condition of the value document from the condition value using a preset criterion.