Mobile phone presence
The International Herald Tribune today features serial entrepreneur Jyri Engeström and his Jaiku mobile phone software, “which allows people to learn where their friends are, what they are doing, who is with them and what time they last used the phone (and for how long). The service also alerts users when a friend posts a photograph or blog entry on the Internet.”

“For those who do share their whereabouts and activities through Jaiku, a photo and their status appears on friends’ phones. Actions like selecting a quiet ring tone will tell all friends that you cannot be disturbed.”

The article goes on to raise some important privacy and social concerns.

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