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OFFSIDEFENCE™

Model OF-C1 / Collar Unit

Don't just detect offside.
Correct it.

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OffsideFence campaign key visual
CAMPAIGN KEY VISUAL / OF-C1 COLLAR UNIT / EARLY ACCESS WINDOW
$247,831
Funded
1,247
Backers
18
Days Left
247%
Funded
Goal: $100,000 247% funded
The Problem

Offside Decisions
Kill Momentum.

Every season, thousands of goals are disallowed by razor-thin offside margins. VAR helps — but only after the whistle. The damage is already done: celebrations cut short, tactics disrupted, match flow broken.

What if a player could feel the offside line before crossing it? What if correction happened at the speed of instinct — under 200 milliseconds, delivered as a subtle haptic pulse at the neck?

OffsideFence is a wearable collar unit that pairs real-time computer vision with micro-haptic feedback. It doesn't just detect offside — it trains the body to avoid it.

Player wearing OffsideFence collar
Why OffsideFence

Engineered for
the Pitch.

Every component designed for match conditions, with emphasis on latency, wearability, and training utility.

⚡
Sub-200ms Latency
Correction signal delivered before the next stride. Fast enough to change a run, invisible to opponents.
🎯
99.2% Accuracy
Multi-player tracking with YOLOv8 backbone, fine-tuned on 50,000+ match footage frames.
🧬
Darwin Learning
Adaptive engine evolves correction thresholds based on each player's unique movement signature.
🔋
90min Battery
Full match endurance. Quick-charge to 80% in 15 minutes via magnetic dock.
💧
IP67 Rated
Rain, mud, sweat — sealed for training-ground conditions and repeated field use.
🦊
Inzaghi Legacy Mode
Train against simulations of history's tightest offside traps. Learn to beat the line — then do it legally.
Reward Tiers

Back the
Future.

Choose your tier. Early backers get priority shipping and exclusive pricing.

Early Supporter
$49
pledge
  • Name on the Founders Wall (digital)
  • Exclusive backer updates & dev diaries
  • OffsideFence sticker pack (physical mail)
  • Early access to companion app beta
Select This Reward
⚡ Most Popular
Early Bird Unit
$299
1x Collar Unit
  • OffsideFence OF-C1 Collar Unit
  • Magnetic charging dock
  • All 4 operational modes unlocked
  • 1 year firmware updates
  • Founders badge in companion app
⚡ 143 of 500 remaining
Back This Reward
Club Pack
$2,499
11x Collar Units
  • 11 × OffsideFence OF-C1 Collar Units
  • Team charging station (11-bay)
  • Coach dashboard & analytics portal
  • Priority setup & onboarding call
  • 2 years firmware updates
  • Team name engraved on each unit
Select This Reward
Collector's Edition
$499
limited run
  • OffsideFence OF-C1 — Matte Black Edition
  • Numbered certificate of authenticity
  • Premium hardcase with laser engraving
  • All Early Bird Unit perks included
  • Exclusive Inzaghi Legacy Mode skin
🔥 27 of 100 remaining
Select This Reward
Stretch Goals

Unlock the
Roadmap.

As funding grows, so does the product. Every stretch goal benefits all backers.

Goal 01
Collar Unit visual for first funding goal
$100K
Base goal. Collar Unit ships with Training & Match modes.
✓ Reached
Goal 02
Shin Guard Patch visual for second funding goal
$175K
Darwin Mode unlocked for all backers — adaptive learning engine included.
✓ Reached
Goal 03
Private Signal Module visual for third funding goal
$225K
Inzaghi Legacy Mode unlocked. Simulate history's tightest offside traps.
✓ Reached
Goal 04
Future tactical radar platform visual
$300K
Companion app gets real-time tactical radar — bird's-eye view of all players.
$52K to go
OffsideFence product roadmap without copy
Stretch Goal Context — Silent Product Roadmap
OffsideFence full campaign roadmap visual
Reward Ladder — Collar to Private Signal Module
Technology

Under the
Hood.

The Roboflow Sports Pipeline — real-time computer vision architecture for pitch-level intelligence.

Detection
Player Tracking
Multi-player tracking with jersey-number-free identification. YOLOv8 backbone fine-tuned on match footage.
Calibration
Pitch Keypoints
Automatic pitch registration via line intersection detection. No manual calibration required per broadcast angle.
Mapping
Homography Transform
Perspective-to-tactical mapping. Converts pixel coordinates to real-world meter positions in sub-frame time.
Signal
OFP/0.1 Protocol
Custom encrypted signal protocol. Sub-200ms end-to-end from detection to haptic pulse. Zero external footprint.
Detailed OFP protocol diagram
Detailed Signal Stack — Used Here As The Technical Explainer Poster
What People Are Saying

Early
Reactions.

Feedback from testers, analysts, and football professionals.

The latency numbers alone are staggering. If this works in match conditions, it changes how we think about offside training entirely.
⚽
Marco R.
Youth Academy Coach — Serie A Club
I've tested every wearable on the market. Nothing comes close to this form factor. The collar is barely noticeable after 10 minutes.
🏃
James K.
Sports Technology Reviewer
The Darwin Mode is genuinely clever — it learns your movement patterns and adjusts thresholds. It's like having a coach that evolves with you.
🧠
Dr. Elena V.
Sports Science Researcher
FAQ

Common
Questions.

Is OffsideFence a real product? +

No. OffsideFence is a fictional product concept created for creative and editorial purposes. This crowdfunding page is a design exercise — no real hardware is being manufactured, no real money is being collected, and no real product will be shipped. The campaign, product, and all associated claims are entirely fictional.

What's in the box? +

Each Collar Unit ships with: the OF-C1 collar device, a magnetic charging dock, USB-C cable, quick-start guide, and a microfiber carry pouch. The Club Pack includes an 11-bay team charging station instead of individual docks.

Is it legal to use in competitive matches? +

OffsideFence is designed primarily as a training tool. Match Mode is intended for use in environments where wearable technology is permitted. Always check with your league's regulations regarding wearable devices during competitive play.

How does the haptic feedback work? +

The collar contains a micro-haptic rail along the back of the neck. When the system detects you're approaching or crossing the offside line, it delivers a subtle vibration pulse — calibrated to be felt by the wearer but invisible to opponents and officials.

When will units ship? +

Estimated shipping is Q2 2027 for Early Bird and Collector's Edition backers. Club Pack orders ship in Q3 2027 to allow for team onboarding and calibration.

What's the return policy? +

Campaign policy provides a 30-day satisfaction guarantee after delivery, provided units are returned with all included accessories and original packaging.

Back the
Offside Revolution

Join 1,247 backers who believe offside correction should happen at the speed of instinct.

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