To dream of a photo memory card represents an impermanent impression or accumulation of events. Beliefs, opinions, or notions that can be changed. A fresh start is always an option if you decide to change your mind. Your impression of a situation based on a choice that can be changed at anytime.
A memory card is a sign that a decision you made has left a noticeable or lasting impression on you, and that you can “wipe” this impression clean by changing your mind.
Example: A man dreamed of having a 64 Gig photo . In waking life he refused to go along with demands being made of him knowing it would punish him with terrible lasting memories that he could have chosen to live through differently if he wanted to.