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An LED car sign
A one-size panel of small lights that hangs or sticks inside the window. It covers part of the glass, and the picture is made of visible dots. Good for a few words, and usually readable in daylight.
Compare
HoloGlass or an LED car sign?
Both put a message on your car window. An LED sign is a small, pixelated panel. The HoloGlass projection system turns your whole window into a sharp, full-color display, made for your car.
The real HoloGlass system.
The HoloGlass projection system: the HoloGlass unit inside the car, and a screen made for your window.
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The HoloGlass unit Sits inside the car and lights the screen. -
On its window mount A suction-cup mount holds it inside the car. -
The custom-fit screen Made to match your car’s window pattern. -
In every kit The HoloGlass unit with 40 GB of storage, the mount, power inverter, HDMI cable and USB-C phone adapter, remote, a setup guide and a storage bag.
The short version
A small panel. Or the whole window.
The HoloGlass projection system
A screen made to match your car’s window pattern, lit from inside the car by the HoloGlass unit. The whole window becomes the display for photos, videos, logos and your QR code. Made for dusk to night.
Side by side
What each one does.
| Topic | Typical LED car sign | HoloGlass projection system |
|---|---|---|
| What it shows | Text, simple icons and animations made of dots | Photos, videos, logos, Pranos AI signs and your QR code |
| Picture | Pixelated: you can see the dots | HD |
| Size | A small one-size rectangle that covers part of the window | Made to match your car’s window pattern, so the entire window becomes the display |
| Best light | Day and night | Dusk to night |
| QR code | Depends on the panel | Built into the Pranos app. Viewers scan it and land on your page. |
| Control | Remote or phone app, depending on the model | The Pranos app, with a direct line from your phone to your window |
| Make a sign | Type text in the sign’s app | Make one in the sign builder, or describe it and Pranos AI designs it |
| Install | Usually quick | Takes longer the first time. Our setup guide and live setup help walk you through it. |
| Price | Usually lower | From $289. App and Pranos AI included. |
| While driving | Local rules apply to both. With HoloGlass, play video only while parked. | |
LED details are typical of signs sold online in 2026 and vary by model.
Which is right for you
Pick the one that fits the job.
Choose an LED sign if
- you need a short message in bright daylight
- a few words are enough
- you want the lowest price
Choose the HoloGlass projection system if
- you want people to scan your code and find you
- you want photos, video and your real logo, not dots
- you show at dusk and at night: events, pop-ups, game days
- you want the entire window as your display, made for your car
Good to know
Quick answers.
- Is HoloGlass an LED sign?
- No. HoloGlass is a projection system: a screen made for your window, lit from inside the car by the HoloGlass unit, so the whole window shows sharp photos and video. An LED sign is a small panel of lights, so its picture is pixelated.
- Can I see it during the day?
- HoloGlass is designed for low-light and nighttime use. The image becomes stronger as the surrounding light decreases. For bright midday messages, an LED sign is the better tool.
- Can HoloGlass show moving messages?
- Yes, while parked. Play a short video, or add a GIF in the sign builder. Our tools and Pranos AI don’t create flashing effects.
- Is a sign on my car window legal?
- Rules differ by city and state, so we can’t promise what’s allowed where you live. How to check yours ›
- Will HoloGlass fit my car?
- Rear Side Door fits most sedans, SUVs, crossovers and pickups with rear side windows (crew cab; most extended cabs). The fit tool tells you right away which windows fit yours. Will it fit my car? ›
HoloGlass
Your whole window. Your message.
From $289. App and Pranos AI included.