Laptop scanners from the beginning
One does not need to look far for the reason; a person's full contact details, as given on such a visiting token, would take much too long to recite and store on a personal digital assistant, even the likes of which are out today. Furthermore, exchanging business cards is still a means of social formality. Of course, they may easily get lost or misplaced. Data stored in digital form does not suffer from this risk. But as mentioned before, it simply is not feasible to have to individually make entries into a computer or cell phone for every contact detail that a business card affords.