By now most people are familar with qr codes and what they can be used for if not heres a link to a wikipedia article about qr codes.
Japan is pretty much qr crazy there used all over the place so Memorial stone maker Ishinokoe (Voice of the Stone) of Yamanashi Prefecture will soon begin producing grave stones with QR codes embedded in them. the service is being called Kuyou no Mado roughly translated Memorial Service Window, visttors can scan the qr code to gain information on the deceased.
the qr codes can give acess to pictures, video, family information, and other items.while this system may seem outDED in a country that has burgeoning RFID technology(for more on RFID or radio frequency Identififcation check out this wikipedia article ), they are bound to be able to be read by many future generations of devices.
The bellow sample QR code is readable if you have a device or phone that can read QR codes ,if not you can check it out with this link.