This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
The photocell array used in the Visotactor A. en The photocell array used in the Visotactor contains cells used for recognition in addition to the eight optophonetype cells nearest the scale which connect through amplifiers to the tactile stimulators in the Visotactor base The largest recognition cell in the center of the substrate