Photo Credits

  1. Page 8: Digital DNA. Sergey Nivens | Shutterstock
  2. Page 39: Amplifier. Denyshutter | Thinkstock
  3. Page 40: Hand on tablet. Peshkova | Shutterstock
  4. Page 49: Container ship. Stewart Sutton | Digital Vision | Getty Images
  5. Page 99: Money pile. Serg Dibrova | Shutterstock
  6. Page 101: Running shoes. Warren Goldswain | Shutterstock
  7. Page 116: Hiker. Dudarev Mikhail | Shutterstock
  8. Page 121: Mobile check-in app. Ryccio | iStock Vendors | Getty Images
  9. Page 122: License plate camera. ELSAG
  10. Page 144: Security camera. Blazej Lyjak | Shutterstock
  11. Page 175: Urban crossroads. Zoonar | Thinkstock
  12. Page 192: Storm cloud. Zastolskiy Victor | Shutterstock

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