The Magicstick iPhone and Kindle charger by Powerocks is an extremely handy gadget to keep in your bag. It weighs only a few grams, is reasonable inexpensive and can recharge your iPhone twice before it has to be recharged itself.
One of the things I like about this book is that it takes the topic of privacy wider. It’s one thing to lock down your email and Internet connection to keep messages private, but if the person at the next table in the cafe is reading your email as you type then who cares how secure the connection is? This is a practical, readable and even humorous guide for all of us.