When anyone who has friended them on foursquare checks in at or near a location that's in the book they'll see a pop-up tip reminding them to check the book for coupons.
当任何加了它们为好友的人在他们书中的位置或者附近签到，他们就会看到一条弹出提示，告诉他们有书券可用。
The Kindle tells you your "location" in the book and gives the percentage of the book you've read, rather than showing a page number.
Kindle会告诉你在这本书中的“位置”，给出一个已读的百分比来，而不是显示页码。
Only a small number blatantly compromised privacy: 36 accessed the device's location without first informing the user; another five mined data from the user's address book without permission.
只有少数公开协定的隐私，36个被访问的设备位置没有事先通知用户，还有5个未经用户许可从用户的地址簿挖掘数据。
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