Frequently Asked Questions

A compact HoloGlass unit mounts inside your car and lights a screen made for one window. People outside see your signs, photos and videos. Nothing is mounted outside the car.

HoloGlass is made for dusk to night. Bright midday sun washes it out, and the picture gets stronger as the light fades.

HD, and brightest at dusk and at night. The whole window becomes the display.

Yes, on any Bluetooth speaker you own. Pair it in the HoloGlass unit’s settings, using the included remote.

No. It runs on your car’s power, through the 12-volt socket and the included power inverter. Depending on the car, that socket turns off with the car, stays on for a while, or stays on; your owner’s manual says which. When the car isn’t running, HoloGlass uses your car battery, and a low battery may not start the car. So keep that time short, and unplug the inverter when you leave the car.

Rear Side Door fits most sedans, SUVs, crossovers and pickups with rear side windows (crew cab; most extended cabs). The HoloGlass unit mounts inside with the included suction-cup mount, on the opposite rear window or on a sunroof or glass roof. Back Windshield and Front Windshield need a sunroof or glass roof, and Back Windshield also needs a fairly upright back window, like most SUVs (steeply sloped glass, like a Tesla Model Y, doesn’t work). Check your car with the fit tool: it answers right away. Will it fit my car? ›

We make your screen to match your car’s window pattern, from the make and model you enter with your order, so it fits your window exactly and you can install it yourself. The Rear Side Door and Back Windshield screens slide right into place; the Front Windshield is a roll-up film you lay over the windshield and roll up when you’re done.

Before you order, text us a photo of the window and the inside of the roof at (415) 754-8430. We’ll tell you what fits.

On most cars, the left and right rear side windows are the same shape, so one screen fits either side. For an unusual vehicle, our team checks a photo first.

Yes. The kit is designed for customer installation and includes the mounting hardware and setup guide. First-time setup varies by vehicle. Later installations are faster. Live setup help: (415) 761-1328.

Light and moderate tint generally work. Very dark tint makes the image dimmer. HoloGlass is intended for evening and low-light conditions.

No. The screen is opaque, for a brighter image. Take it out when you’re not using HoloGlass.

Yes. The screen is removable and reusable, and the kit’s storage bag keeps everything together between installations.

One. For more windows, you need a kit for each. The Pranos app is paired with one HoloGlass at a time.

In the Pranos app, design signs with Pranos AI or the sign builder, send your own photos and videos, and build playlists. The HDMI phone adapter and an HDMI cable come in every kit too, so you can screen mirror your phone directly or stream live (it needs a phone with USB-C video output).

The HoloGlass unit has 40 GB of storage for your signs, photos and videos, and each file must be under 4 GB. It plays common video formats such as MP4 and MOV; a file it can’t play is skipped. In a looping playlist, each photo or sign shows for 10 seconds and videos play through.

Yes, while the Pranos app is set to Parked: play, pause, skip, loop the playlist or one item, and add to your playlist. In Driving, these are locked and what’s on your HoloGlass stays put. Tap Parked at the top of Now playing to change what’s playing.

Power on your HoloGlass, open the Pranos app and scan the code on your HoloGlass. Your phone connects to it directly, with no account needed. No code on the screen? Press OK on the HoloGlass remote.

Not to send or play photos and videos stored on your phone. Ones kept only in iCloud need internet to download first. Pranos AI needs internet to design a sign: the app uses your phone’s mobile data, then reconnects to your HoloGlass (you may be asked to tap Join). No internet? Use the sign builder, which works offline.

Yes. You choose what HoloGlass shows: your own photos, videos and signs. They go from your phone to your HoloGlass over its own Wi-Fi, with no internet needed. Pranos AI is the exception: what you type or say to it goes to Pranos and our AI provider to design your sign, and your photos stay on your phone. Use only content you have the right to show, and check your local sign and advertising rules.

Pranos AI turns your car window into a smart digital window. In the Pranos app, say or type the sign you want, and it designs it, usually in about 12 to 30 seconds, depending on the level and your connection. Keep talking to change it. More about Pranos AI ›

No. The Pranos app and Pranos AI come with every kit. Pranos AI includes a free monthly allowance. If you use it up, you can keep making signs yourself in the sign builder until it resets.

No. Pranos AI is designed to decline explicit or hateful requests, police and emergency look-alikes, and signs that claim to be official or sponsored by a brand. It paints original pictures, not real people or famous characters.

Yes. Save your links once in My details. When you ask Pranos AI for a QR code, it points to the link you saved. In the sign builder, you can make a QR code from any link you type.

Play video only while parked. Stopped in traffic isn’t parked. Before you drive, with your phone connected to your HoloGlass, switch the Pranos app to Driving: a playing video pauses on the frame it’s on, a photo or sign stays up, and the app won’t play or upload anything new until you switch back to Parked. Driving is a switch you set on each phone, and it doesn’t sense motion. Driving covers what the Pranos app plays. It doesn’t control HDMI mirroring or the HoloGlass unit’s other inputs. Some places restrict any display while the car moves, even a still image, so check your local rules and turn HoloGlass off where it isn’t allowed. You’re responsible for what your window shows. Front Windshield: parked only. Roll the screen up and put it away before you drive.

Display, window and advertising rules differ by state, county and city, and they change, so check the rules where you live and drive. Play video only while parked. Stopped in traffic isn’t parked. Before you drive, switch the Pranos app to Driving. You’re responsible for what HoloGlass shows. Safety and local rules ›

Run it with the back seat empty: the picture crosses the back seat to reach the window, so someone sitting there would block it and look into the light.

We make your screen for your car and ship your kit within 3 business days.

Yes, within 15 days of delivery, with all original parts in the box. Because every screen is made for your car, current terms include a $75 restocking fee. Email support@pranos.ai to start a return. Refund policy ›

Yes. Every kit has a 1-year warranty.

Call or text (415) 754-8430 for questions and orders, or call (415) 761-1328 for live setup help. Email support@pranos.ai.