I was searched by someone who wants to know where I am, by using a function which is provided by cell phone provider, NTT-DOCOMO, called "IMA-DOKO-SEARCH".
The function can search a place of a certain cell phone with its number. If you want to search, you enter a target number, then a system send email message to a cell phone to ask him to allow answering where he is.

It will be useful if you want know where is your kid if He/Her is out of home by oneself, or, if elder people who is suffering from dementia is out of home and you want to know where one is. However, for me, It was rather creepy thing to be searched, and it will become another seed for conflict on network society.

iPhone is now available in world wide. I am curious if it will equipped a same function, and How do you feel about it?