Password management is challenging, even for famous magicians. Teller, of Penn & Teller, tries to conjure a viable system. In sales, a good memory is not just remembering passwords but also is remembering facts about your products, your company, and your competitors – AND your prospect.
It also doesn’t hurt to remember the names and “family” facts of your prospects and customers.
You also need to make sure that your prospects and customers remember your facts so using some of these techniques (such as mnemonics and visualization to aid your prospect’s memory system).
This article on WSJ will help give you some ideas. Even better, Teller references several solid memory resources. I strongly urge you to read the article referenced below.