1. 1 Proprietary & Confidential Andrew Charkin (acharkin@tripadvisor.com) Mobile Engineer TripAdvisor, LLC Mobile is the New Cool HJUG - Wednesday March 30 th, 2011 We Are Hiring full time, interns Relocation compensation, sponsorships, etc HQ in Newton, MA (outside of Boston)

2. 2 Proprietary & Confidential TripAdvisor is the world’s most popular & largest travel community with.. 40 million unique monthly visitors 20 million registered members 40 million reviews and opinions Present in 28 countries TripAdvisor Mobile Site and Apps 5 million unique monthly visitors We hit 1 million unique monthly visitors the month after we launched Same global coverage Native apps on a variety of platforms iOS (iPad app reached #1 in more than 50 countries) Android Nokia Ovi HP/Palm webOS … and our mobile site only launched 15 months ago (12/7/2009)! How did we get there so fast?

3. 3 Proprietary & Confidential Mobile web app HTML, CSS, JavaScript Quick to launch and update No access to low level features (camera, accelerometer, etc.) Easier to track metrics Native app Java (Android) Higher development cost across multiple platforms Has access to lower level features Tougher to track metrics

4. 4 Proprietary & Confidential Hybrid Apps combine the best of both worlds Basic building blocks in HTML, CSS, JS displayed in a web view Build features leveraging those low level APIs natively Quick(er) to launch & update most features Easy(er) to track metrics

5. 5 Proprietary & Confidential With a hybrid app you are free to implement whatever works best Choose the right tool for the job! Use simple HTML, CSS, JS to build the simple stuff Use HTML5 to build more complicated features and push them out cross-platform Use native code for the most complicated/low level features Entire page built with HTML & CSS Photo viewer built with DHTML/JS Photo upload built natively

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8. 8 Types of fragmentation: OS version: 1.5, 1.6, 2.1, 2.2, 2.3, … 3.0 Phone carrier: Verizon, Sprint, At&t, etc Phone manufacturer: HTC, Motorola, Samsung, etc Screen size: ldpi, mdpi, hdpi Solution: deviceanywhere.com Get different devices

9. 9 Proprietary & Confidential Z index is broken on all android OS’s except for 3.0 Honeycomb Solution: Don’t use overlays on web pages Trigger an onfocus before onclick to block any onclicks behind the overlay

10. 10 Proprietary & Confidential Android has all the currency symbols except for the won Solution: Use a W (strikethrough if you’re feeling fancy)

11. 11 Proprietary & Confidential Questions? Andrew Charkin (acharkin@tripadvisor.com) Mobile Engineer TripAdvisor, LLC

12. 12 Proprietary & Confidential Hiring like crazy! Lots of interesting mobile projects in the pipeline Lots of interesting social projects in the pipeline (what could you do with 1.2 billion geographic place pins from our Facebook users?) If you want to hear more about Facebook and TA come to the talk at Rice tomorrow (6pm Huff house room 107)