A new type of indenter is described. In combination these traits set Thunderbolt apart from all other existing varieties of Hosta known to the inventor. The average size of the primary particles is smaller than 0. The video message is then provided to the recipient, and made searchable by providing the transcription as searchable content in connection with the display of the video message. The scanning unit is advantageously configured as a system of several detector elements which form a detector chain.