What does this question mean?
What am I going to use for a memory?
The talking man had a brain illness and lost his memory. He's talking with his friend and asked by him if he's remembering someone or not? Then our character says this sentence to him:
“What am I going to use for a memory? As near as I can figure, she was a stranger. But I do have some kind of echo going around in my head. Let’s say there’s the ghost of a possibility. No more.”
I couldn't find the meaning for this question: What am I going to use for a memory?
But can it be 'how can I remember' or 'what should I do for remembering her?'
Thank you for explanation :)