Different lights are also a part of everyday life. Many, maybe most, face-blind people do not use cosmetics and hairstyling except when it is expected by society. Some individuals are often found together. Then it can be possible to identify one individual by its relationship with the other. For example, if Daniel kisses a woman with grey hair that looks approximately like his wife Lisa, it probably is his wife Lisa.
Uniforms can be a big trouble.
Identifying by location Some individuals we expect to see in certain places. When we suddenly see them in another place we may fail to recognize them altogether. On the left we see Sten in the stair where we usually find him. He is the big flat one closest to us. On the right we meet him unexpectedly in a garden where we did not think he would be.