When used without a camera it switches to the built-in animation - randomly generated "city" view with fireworks and spotlights reflecting in water.

On most new new devices you can also use the third option - turn your personal photos into puzzles (requires the Palm/PalmOne Media application or Tapwave Zodiac Photos application)

Of course this application is completely useless, except that everyone should try it at least once to experience this unusual feeling of dragging fragments of the reality ;-)

Guide

• Selecting image source Click the icon in the top right corner and select one of 3 options:
• Built-in Animation Available on all devices. This animation is meant as a replacement for live video on devices where the camera is not supported. You will get a slightly different view each time you start the puzzle, because the skyscrapers and all moving elements are placed randomly. The animation can be paused by clicking the green triangle ("play" button).
• Select Picture Just select a photo from your personal collection and turn it into a jigsaw puzzle. Does not work on video clips, even if your Media application supports it. This feature is available on: - recent Palm/PalmOne devices equipped with Media application (i.e. most Tungsten and Zire models, LifeDrive, Treo 650 and 600) - Tapwave Zodiac
• Live Camera The coolest feature - make a jigsaw from a live video from your camera! Requires Treo 600 or 650. The live video can be paused by clicking the green triangle ("play" button).
• Restarting game Click the Shuffle button to start a new puzzle
• Selecting difficulty Use menu to select one of 5 difficulty levels.
• Randomness Did you know? Each time you start a puzzle the pieces are cut in a different way, a different background pattern is created and (in case of the built-in animation) skyscrapers are ordered differently!

• Boring TV shows can be entertaining again! - help the newsman regain his shape before he finishes talking!
• The other queue always moves faster than yours, but that's good - it gives you more time to solve the puzzle of your shopping cart before the checkout!
• Meet new people using this perfect ice breaker! "Hi, please help, where should I put your ear? It fits nowhere..."

• Erroneous black pixels are occasionaly visible where the pieces meet

• As far I know, of all camera equipped Palm devices, only Treo 650 API allows for processing the live video from camera without displaying it on the screen. This is crucial feature, because unlike all other video applications for taking photos or recording clips, in Video Jigsaw you can't have a preview on the screen - the whole point of this application is to display something different from what the camera can see. Note that this restriction only applies to the official API, I guess the hardware is capable of doing this on any device, and the only problem is that noone knows how to do it... Fortunately, on Treo 600 it was relatively easy to control the CPU DMA directly and feed the video into application instead of displaying it on the screen, so the number of compatible devices was increased twofold ;-) If you know how to achieve similar result on other devices and want to see them supported in Video Jigsaw - tell me.
• Converting photos into puzzles is technically possible on all devices, but for now it is only implemented on Palm/PalmOne and Zodiac, because those devices come with standard components for managing photos. Handling generic JPEG images from the card might be added in the future.