As Andrew Tanenbaum told us at the IEEE Conference of Pervasive Computing, it is possible to use RFID-chips to infect the underlying databases…

Read the full article on the website of the University of Amsterdam:

[…]the prankster decides to unwittingly enlist his cat in the fun. The cat has a subdermal pet ID tag, which the attacker rewrites with a virus using commercially available equipment. He then goes to a veterinarian (or the ASPCA), claims it is stray cat and asks for a cat scan. Bingo! The database is infected.[…]

Here is the full paper.

If I imagine Siepke infected with a computer virus, this cat gets only more precious ;)