Yes, that's a great tip.  However, I do not recommend doing that in front of the person.  Why?  In Asian cultures, it is considered impolite...actually, rude. A business card is a reflection of the person and should be treated with care. So, to be safe, you can carry a small notepad to take your notes and tuck the business card in the front of it or in a baggie so all stay together.  Plus, many cards have info on the back or slick surfaces.  But it's a great way to remember who is who!  Thank you!   Dana