One entry in your contacts list can be set as an electronic business card, which can then be located quickly.
Set up a business card by putting your details into Contacts; then view your contact record and press and choose Set as Business Card.
Your business card will appear on the Contacts list with a .
Since only one business card can be set at any one time, when a new card is set the previous one is automatically dropped (it continues to exist as a contact).