Modern technology comes to us with a price: we may buy it and believe it is ours, but it's not exactly ours. It's our computer, but what we do and look at while on our computers is constantly being shared as - there's a friendly sounding word for it - cookies. It's our phone, but when and how many minutes we spend, what phone numbers we call, what phone numbers call us, the voices of callers on our voicemail, the websites we visit, the text messages we send and receive are not only stored on the phone itself. It's your electronic book, but info on what you are reading and what you have read is available to others. Images taken by many digital cameras, especially those on computers and cell phones, are available to others. And all of these devices send out information regarding the precise location of the device, and the precise location of you if you happen to have the device with you.

I'm not saying some specific individual is following the minutiae of your life. This info can be used for marketing purposes, or service improvements, etc. However, it is possible for persons to access your individual data and follow the minutiae of your life. It is possible for persons to reorganize your data, and alter how you may access it. It is possible for your data to no longer be accessible to you, even though you are holding the cell phone you purchased in your own hand.