Flemish public transportation company De Lijn uses real bus & tram tickets to replace the traditional business cards of their employees. The bus & tram tickets are made from paper and are about the same size as regular business cards. Duval Guillaume created bus & business cards for workers at De Lijn with their name and personal details printed on.
Since the original bus & tram ticket are used, you actually receive a free ride with a bus or tram as someone from De Lijn hands you over their business card. Therefore the baseline on each 'bus ticket' slash 'business card' reads: "You can always reach me with this card."