A symbol on a Japanese grave can be scanned by mobile phone cameras to reveal pictures and details about the dead.
Teruo and Miyoko Oba have installed the technology at their family grave site in the city of Kofu, near the Japan Alps. Yoshitsugu Fukuzawa, the head of Ishinokoe, the tombstone maker, said that the company had patented the idea and expected plenty of customers even though the "e-graves" will cost about £5,000. Mrs Oba said: "It's a bit of a new approach. We wanted our grandchildren to be able to use it when they visit."