Everyone should have a filing system, even if it's just a box you throw stuff into. Unclutterer suggests using business cards in these systems to make notes for reference, relieving you of having to remember things.
Adding context to business cards is nothing new, but this trick isn't about networking -- it's about creating easy references for you. It can be applied in any situation where you need to keep track of a person, time or any other information. For example, you could use it for your health records:
If your doctor sends you for tests at a private clinic, always get a business card from the clinic. On the back of the business card write the type of exam that you had and the date of the exam. Keep the business card in your Health file in your filing cabinet. You will always be able to request the necessary information if another doctor asks for it. You can do the same with other businesses and service providers, as well.
This trick would be a handy way to remember any employee in a service-oriented job, so you know who you talked to, what you talked about, and when. Those details can save you the trouble of having that whole conversation with a new employee the next time you visit the store.
As Unclutterer says, this also acts as a makeshift receipt, just in case yours is lost. With the time, date and type of service listed, it will be easy to tell any business to look you up in their records when a name alone won't do.
Small tips to save time and effort [Unclutterer]