From Pink Tentacle:
If houseplants could blog, what would they say? To find out, Kamakura-based IT company KAYAC Co., Ltd. has developed a sophisticated botanical interface system that lets plants post their thoughts online. A succulent Sweetheart Hoya (Hoya kerii) named “Midori-san” is now using the system to blog daily from its home at bowls Donburi Cafe in Kamakura.
The plant interface system, which is built around technology developed by Satoshi Kuribayashi at the Keio University Hiroya Tanaka Laboratory, uses surface potential sensors to read the weak bioelectric current flowing across the surface of the leaves. This natural current fluctuates in response to changes in the immediate environment, such as temperature, humidity, vibration, electromagnetic waves and nearby human activity. A specially developed algorithm translates this data into Japanese sentences, which are used as fodder for the plant’s daily blog posts.