# A punch in the right box is proof nobody can fake > An orienteering control card is proof, not opinion — each numbered box holds a unique pin pattern, so a hole in the right one shows exactly where somebody stood. August 19, 2026 · https://justog.club/stories/orienteering-control-card Twelve numbered boxes, 31 through 42, each holding a different scatter of needle-punched holes. START 10:14 at the head. FINISH 11:02 beneath the last box. Nothing on this card is a claim. Every hole in it is evidence. ## What is a control card, and what do the holes actually prove? That the runner physically stood at a specific, unmarked point in the terrain, one for each numbered box. Out on the course, each control sits on a post carrying its own needle punch, and no two punches in the same event are cut the same way. Pressing the card against the post leaves a pattern that exists nowhere else on the map. There's no photograph, no witness and no signature involved — the proof is a hole, and the hole either matches its box or it doesn't. ## Why does it matter that every punch pattern is different? Because a card with the right pattern in the right box is close to impossible to produce any other way than by actually visiting that post. A signature can be forged and a time can be estimated, but a needle scatter unique to one post in one wood is a hard thing to guess at from a map alone. That's what makes a control card different from most sporting records: it isn't a stronger version of somebody's word, it's evidence that doesn't depend on anybody's word at all. Twelve boxes, twelve independent checks, each one either answered or not. ## What makes a good control card to have printed? Whether the course behind it was actually run, and whether the punch patterns look like they came from real posts rather than a decorative repeat. A card where all twelve boxes carry the same neat dot arrangement reads as pattern for its own sake. A card where the holes are visibly irregular from box to box — because that's how real control punches are cut — reads as a course somebody actually navigated between START 10:14 and FINISH 11:02, in whatever order the numbering demanded. ## Can a real orienteering club or event go on the shirt? If a specific club or race series is the point, get their permission — club badges and event names in this sport are licensed the same as any other. Where the point is a specific course rather than a specific club, an invented event carries the idea just as well, since nobody owns the general fact that a punch card proves location. What no club or organiser can license is a claim that a governing body verified the run as a qualifying result — the card's own holes already do the proving; nothing about a printed shirt needs an official mark on top of that. ## Does this kind of proof work outside orienteering? Anywhere the record needs to show presence at a place rather than a time, a score or a name. A [homing bird's leg ring works from a related idea](/stories/pigeon-race-clock-ring) — a fixed, unforgeable identifier used to settle where and when something actually was. A control card's punches do the more literal version: proof of place rather than proof of speed, which is also the difference between it and [a race number, which proves registration and a finish, not the ground covered in between](/stories/race-number-bib). ## Isn't a record made of holes rather than marks a strange thing to print? Not really — the absence is the whole mechanism, not a gap in it. A punch doesn't add anything to the card; it removes a small piece of it, and that removal is what makes the proof work — there's nothing to add convincingly, so there's nothing to fake. [A summit book works from the opposite end of the same instinct](/stories/summit-log-book), recording presence in handwriting instead of holes, but both exist because being somewhere, once, is worth something that a result on its own doesn't capture. ## Does a control card print well? Yes — small punched dots and clean box numbers hold up well as a flat one- or two-colour print. Keep each box's hole pattern genuinely irregular rather than symmetrical, since a card where every box looks hand-varied is what makes it read as real rather than ornamental. Black for the grid and numbers carries the card; one magenta on START and FINISH is enough to mark the two moments that aren't boxes. ## How do I get one made? Describe your card at [JustOG](/) — the box numbers, the punch patterns, and the start and finish times. Pick a direction, drag the crop frame, see it composited on the real garment, and it's made to order and shipped. Designs other people have published are in the [shop](/shop). Twelve boxes, twelve holes, and not one word written anywhere on the card.