What does social security registration photo mean

Insurance editorial help, more questions can be answered online.

The uniform specifications and size of the social security registration photo: 358?pixels (width) × 441?pixels (height), resolution?350dpi. my recent frontal, crown-free color photo, not in uniform or white blouse, often wearing glasses should wear glasses (sunglasses are not included). Requirements for a clear portrait, rich layers, natural demeanor. The head accounts for 2/3 of the size of the photo, white background without border, photo size of 32mm x 26mm.