When you are building a network, it helps to recall odd facts about the people you meet, like the name of their spouse or where you met the last time. If you find it difficult to remember all of that info, The Daily Muse suggests writing it in your phone's contact book.
It's similar to adding information to the back of business cards . All contact books now have a "Notes" section to write additional details about a person, so put it to use by writing down relevant information when you first hear it. Or you could combine it with the 15-minute nightly exercise to boost your memory.
I've found that just the act of writing these details down helps me remember them, but I also often pull up my notes before meeting with or emailing someone. It brings me such pleasure to be able to ask a contact about his wife by name, instead of being able to picture her face and having to say "how's... your wife?" awkwardly. And, let's face it: That extra step and personal touch can really make a difference.
The key is to write it while you still remember it, so politely ask to use your phone for a while or make up some excuse. I do this often and my go-to excuse is to ask for the person's correct spelling and pretend to write that while I actually add notes.
The Secret to Remembering Anything About Anyone [The Daily Muse]