People will enjoy your hunt more if the clues match consistently. To improve matching under varied conditions, here are some things to consider:
- Find subjects with good contrast and sharp edges. Organic elements like trees and bushes won’t match well. Nor will mottled or regular textures, like grass, carpet, or sand. Good lighting will also ensure better contrast as well.
- Shadows matter. Klikaklu’s image matching can be fooled into thinking shadows are part of the subject, and the matching may fail as light conditions change through the day. You’re best off using flat elements (e.g. paintings, signs, unusual horizons) that have little likelihood of casting shadows, or using locations where natural light changes little.
- It is more difficult to match an image in direct sunlight, since it can be hard to see the screen. It works, but it will make your players squint a bit more.
If you are having difficulty finding a good subject, you can instead create a QR code, or a free form clue.