17.1.1 Control Types
| Control Type | Description | Advantages / Disadvantages |
| O-Control (Flag) | Traditional orange-and-white orienteering flags attached to a stake or tied to a tree | Highly visible, standard for FootO and MTBO; can be stolen or damaged |
| Simple Markers | Tape ribbons, milk cartons, or cones where flags are unavailable | Cheap and easy; less standardised, less visible |
| Natural Controls | Existing features like signposts, towers, benches used as controls with code visible | No equipment needed; less visible but less intrusive |
| Electronic Controls | SI or EMIT punches or timing units recording visit electronically | Fast, reliable results; requires equipment and power |
17.1.2 Control Codes and Verification
- Each control has a unique code or punch pattern for riders to verify correct visits.
- Methods include:
- Electronic punching (if available)
- Manual punching with a paper card
- Crayon or rubber stamp to mark the map
Noting a unique letter or number on the map