A company introduced smart rings. Ring contains Digital Business Card. It holds customizable personal information. When two people wearing the special smart rings handshake, this information is transferred between the two rings. Ring synchronizes with a credit card-sized digital business card, and it will shows information of the people with whom you’ve exchanged information, it include their personal information, phone numbers, address, date that you met this person.
Ring also needs such sort of power source to work. The rings are powered by your body heat, so no need of batteries. Smart ring becomes popular in the business world instead of other business cards, but the whole system will only work when both people are wearing the rings.