caption: The image shows a small clamshell sitting on top of a table next to a ruler and a piece of paper with a QR code on it. The shell is a light brown color with a smooth, glossy texture and has a few ridges and grooves along its surface. The ruler is a standard measuring tool with a black and white color scale and a few buttons. The paper has a white background with black text and a barcode printed on it, and the QR code is printed in black ink.