When the T-1000 goes to Todd and Janelle Voight's home, why does he ask to keep the photo of John?
Presumably he can remember the photo in perfect detail?
When the T-1000 goes to Todd and Janelle Voight's home, why does he ask to keep the photo of John?
Presumably he can remember the photo in perfect detail?
It's useful for showing other people the photo and saying "Have you seen this kid?"
This is exactly what happens at the Arcade where they first meet.
The T-1000 is using the photo as a tool to help him search for John, showing it to passers-by in the hopes that one of them will recognise him. This works remarkably well.
EXT. 7-ELEVEN STORE - DAY
Officer X has stopped two young girls in front of a 7-Eleven. He is leaning out the cruiser window and showing them the picture of John.
The first girl nods.
FIRST GIRL: Yeah, he was here about fifteen minutes ago. I think he said he was going to the Galleria.
and from the film's official novelisation
He [the T-1000] approached a few kids near Perry’s Pizza on the second floor, then showed them the photograph. They could only shrug. He glanced over at a security guard who was eyeing him curiously. Austin considered the possible alternatives and a second later walked up to the man and showed him the photo, asking him to look out for the boy.