No surprise, it's the one featuring female vocals. Not any, but Anna Wise's, which complete Taylor's voice so perfectly.
"Memory Digital" is a love-gone-wrong story. About lies and how at the end it's only the photos on your phone that's left.
The slick beatwork & Taylor-style syths, plus the smooth vocals of those two make this a really pleasant track, actually. And the melody is super catchy, that's for sure.