Spot-the-difference at 221b

The crew at the Sherlock Holmes themed escape room in London posted a couple of photos on their instagram. Squinting at a tiny screen didn’t work so well for me, so I had to try and make an interactive version. At first I used regular old hotspots, but then changed to using shapes so that I could highlight the object after it was found. I didn’t realise until now that a shape with no border and no fill could still be responsive to clicks.

I used a giant hotspot underneath all the shapes, so that the cursor switching to a hand was not an extra clue.

Apart from Spot-the-Difference, this setup could easily be used for hazard identification etc.

The sparkly noise when you locate a change is from

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