《科技爱好者周刊(第140期)》:由于墓地紧缺,日本一个墓园推出了公共坟墓,一个坟墓对应多个死者。墓碑文字不是刻在石头上,而是以电子纸取代。亲友祭奠时,只要进行蓝牙配对,墓碑就会显示事先设定的死者名字、图片、文字等等。http://www.ruanyifeng.com/blog/2020/12/weekly-issue-140.html
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