The 4-Second Delay That Became a Feature

2026-05-19

I was in the sports barn with Megan the other night, working on back bends and kickovers.

I hooked my phone up to a cheap projector so we could pull up YouTube videos. While we were at it, I opened the camera to record her.

The camera synced to the projector and turned the wall into a mirror.

But something caused a 4-second lag.

🐛

Bug

Lag ruins real-time feedback. Throw it away.

✨

Feature

Lag becomes instant replay without touching the phone.

At first I thought it was broken.

Then Megan did a backbend and looked over at the screen. She watched herself complete the move in real time.

She said, "This is awesome — I can see myself doing a backbend."

 📱 Phone (Camera)
       ↓
 ⏱️ 4-second delay
       ↓
 📽️ Projector
       ↓
 🪞 Wall = Mirror
       ↓
 ✅ Athlete sees rep, self-corrects, repeats

The lag, normally a digital sin, became instant replay.

No stopping to record, review, and rewind. She could do reps at her own cadence, glance over, and self-correct.

That accident became Mirror Mode in Player 1 Training.

A feature born from a dad trying to help his daughter and a cheap projector's glitch.

— Jon