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This picture taken on December 5, 2016 shows a city officer displaying a QR code on his fingernail near the Iruma city hall in Iruma, Saitama prefecture, a western suburb of Tokyo.
A Japanese city has introduced a novel way to keep track of senior citizens with dementia who are prone to getting lost -- tagging their fingers and toes with scan-able barcodes. A company in Iruma, north of Tokyo, developed tiny nail stickers, each of which carries a unique identity number to help concerned families find missing loved ones, according to the city's social welfare office / AFP / Toshifumi KITAMURA        (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)
This picture taken on December 5, 2016 shows a city officer displaying a QR code on his fingernail near the Iruma city hall in Iruma, Saitama prefecture, a western suburb of Tokyo.
A Japanese city has introduced a novel way to keep track of senior citizens with dementia who are prone to getting lost -- tagging their fingers and toes with scan-able barcodes. A company in Iruma, north of Tokyo, developed tiny nail stickers, each of which carries a unique identity number to help concerned families find missing loved ones, according to the city's social welfare office / AFP / Toshifumi KITAMURA        (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

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La compañía Orange Links creó un adhesivo con códigos de barra QR que se pega en las uñas, así si alguien con demencia senil se extravía cualquiera puede saber a quién llamar para que esa persona regrese a su hogar.

Códigos bidimensionales para ayudar a las personas con demencia

La compañía Orange Links creó un adhesivo con códigos de barra QR que se pega en las uñas, así si alguien con demencia senil se extravía cualquiera puede saber a quién llamar para que esa persona regrese a su hogar.