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Four short links: 20 December 2012

SQL Indexes, Instagram Effects in JS, Evil Fake Keyboard, and Preschool UX

  1. Use The Index, Luke — free ebook on tuning SQL database access.
  2. CamanJS — Instagram-like filters in Javascript, permissively-licensed open source. (via VentureBeat)
  3. Don’t Stick That There — USB device pretending to be a keyboard. The benefit of this is that even with USB auto-run disabled, our exploit will still work as it emulates a keyboard. No one ever blocks USB keyboards! (via David Sklar)
  4. Best Practices: Designing Touch Tablet Experiences for Preschoolers (Sesame Workshop) — the good people at Sesame Street Workshop tell what works and what doesn’t when you make tablet touch UIs for kids. Double Tap: Children expect immediate feedback from their touch and tend to think the app is unresponsive when a double tap is required. We suggest only using double tap to prevent a child from accidental navigation (e.g., leaving an activity, accessing parent content).
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